• UDC
    • 0 SCIENCE AND KNOWLEDGE. ORGANIZATION. COMPUTER SCIENCE. INFORMATION. DOCUMENTATION. LIBRARIANSHIP. INSTITUTIONS. PUBLICATIONS
      • 00 Prolegomena. Fundamentals of knowledge and culture. Propaedeutics
        • 001 Science and knowledge in general. Organization of intellectual work
          • 001.1 Concepts of science and knowledge
            • 001.18 Future of knowledge
          • 001.32 Learned, scientific societies. Academies
          • 001.8 Methodology
            • 001.89 Organization of science and scientific work
          • 001.9 Dissemination of ideas
        • 002 Documentation. Books. Writings. Authorship
        • 003 Writing systems and scripts
          • 003.01/.09 Special auxiliary subdivision for writing systems and scripts
            • 003.01 Origins, precursors of scripts. Early forms of scripts
            • 003.02 Emergence of writing
            • 003.03 Graphic expression of language
            • 003.05 Means of producing signs and scripts
            • 003.07 Uses and styles of writing
            • 003.08 Characteristics of writing
            • 003.09 Techniques and methods of deciphering scripts
          • 003.2 Writing systems. Graphic representations of concepts
            • 003.21/.23 Conventional writing systems used for general purposes of literate language communities. Orthographies
              • 003.21 Picture writing
              • 003.22 Syllabic writing systems
              • 003.23 Alphabetic writing systems
          • 003.3 Scripts
          • 003.5 Writing materials and equipment
          • 003.6 Other kinds of graphic representation of thought
        • 004 Computer science and technology. Computing. Data processing
          • 004.01/.08 Special auxiliary subdivision for computing
            • 004.01 Documentation
            • 004.02 Problem-solving methods
            • 004.03 System types and characteristics
            • 004.04 Processing orientation
            • 004.05 System and software quality
            • 004.07 Memory characteristics
            • 004.08 Input, output and storage media
          • 004.2 Computer architecture
            • 004.22 Data representation
            • 004.23 Instruction set architecture
            • 004.25 Memory system
            • 004.27 Advanced architectures. Non-Von Neumann architectures
          • 004.3 Computer hardware
            • 004.3`1/`2 Special auxiliary subdivision for hardware
              • 004.3`1 Production of computers
              • 004.3`2 Computer installations
            • 004.31 Processing units. Processing circuits
            • 004.32 Computer pathways
            • 004.33 Memory units. Storage units
            • 004.35 Peripherals. Input-output units
            • 004.38 Computers. Kinds of computer
          • 004.4 Software
            • 004.4`2/`6 Special auxiliary subdivision for software
              • 004.4`2 Software development tools
              • 004.4`4 Programming language translation
              • 004.4`6 Runtime environment
            • 004.41 Software engineering
            • 004.42 Computer programming. Computer programs
            • 004.43 Computer languages
            • 004.45 System software
            • 004.49 Computer infections
          • 004.5 Human-computer interaction. Man-machine interface. User interface. User environment
            • 004.51 Display interface
            • 004.52 Sound interface
            • 004.55 Hypermedia. HypertextRu
            • 004.58 User help
          • 004.6 Data
            • 004.62 Data handling
            • 004.63 Files
            • 004.65 Databases and their structures
            • 004.67 Systems for numeric data
          • 004.7 Computer communication. Computer networks
            • 004.71 Computer communication hardware
            • 004.72 Network architecture
            • 004.73 Networks according to area covered
              • 004.738 Network interconnection. Internetworking
            • 004.75 Distributed processing systems
            • 004.77 General networking applications and services
            • 004.78 Online computing systems for specific use
          • 004.8 Artificial intelligence
          • 004.9 Application-oriented computer-based techniques
            • 004.91 Document processing and production
            • 004.92 Computer graphics
            • 004.93 Pattern information processing
            • 004.94 Simulation
        • 005 Management
          • 005.1 Management theory
          • 005.2 Management agents. Mechanisms. Measures
          • 005.3 Management activities
            • 005.31 Operational research (OR)
            • 005.32 Organizational behaviour. Management psychology
            • 005.33 Management conditions. Factors
          • 005.4 Processes in management
          • 005.5 Management operations. Direction
          • 005.6 Quality management. Total quality management (TQM)
          • 005.7 Organizational management (OM)
          • 005.9 Fields of management
            • 005.91 Administrative management. Secretariat
            • 005.92 Records management
            • 005.93 Plant management. Physical resources management
            • 005.94 Knowledge management
            • 005.95/.96 Personnel management. Human Resources management
        • 006 Standardization of products, operations, weights, measures and time
          • 006.3/.8 Standards
          • 006.91 Metrology. Weights and measures in general
          • 006.92 Horology. Determination and standardization of time
        • 007 Activity and organizing. Communication and control theory generally (cybernetics). 'Human engineering'
          • 007.5 Self-acting systems
        • 008 Civilization. Culture. Progress
      • 01 Bibliography and bibliographies. Catalogues
        • 011 Universal and general bibliographies
        • 012 Author bibliographies. Individual bibliographies
        • 013 Collective bibliographies
        • 014 Bibliographies of works of particular characteristics
        • 015 Bibliographies of place
        • 016 Special subject bibliographies
        • 017/019 Catalogues
          • 017 Catalogues in general. Subject catalogues
          • 018 Name catalogues
          • 019 Dictionary catalogues
      • 02 Librarianship
        • 021 Function, value, utility, creation, development of libraries
        • 022 Library site, building, premises. Equipment
        • 023 Library administration. Staff. Personnel
        • 024 Relations with the public. Regulations for library use
        • 025 Administrative departments of libraries
        • 026 Special libraries
        • 027 General libraries
          • 027.6 Libraries for special classes of user
          • 027.7 Libraries of institutions of higher education
          • 027.8 Libraries of institutions of primary and secondary education
      • 030 General reference works (as subject)
      • 050 Serial publications, periodicals (as subject)
      • 06 Organizations of a general nature
        • 06.01/.05 Special auxiliary subdivision for organizations and associations
          • 06.01 Rights and obligations of members
          • 06.05 Awards. Honours. Prizes. Distribution of prizes, awards
        • 061 Organizations and other types of cooperation
          • 061.1 Governmental organizations and cooperation
          • 061.2 Nongovernmental organizations and cooperation
            • 061.23 Organizations with humanitarian, philanthropic aims
            • 061.25 Secret or semi-secret organizations and movements
            • 061.27 Foundations. Endowments. Institutions
        • 069 Museums. Permanent exhibitions
      • 070 Newspapers. The Press. Journalism
      • 08 Polygraphies. Collective works
        • 082 Collective polygraphy
        • 084 Pictorial material
        • 086 Documents of particular form
        • 087 Documents of particular origin or destination
      • 09 Manuscripts. Rare and remarkable works
        • 091 Manuscripts
        • 092 Xylographic books
        • 093 Incunabula
        • 094 Other precious, remarkable or rare printed works
        • 095 Books remarkable for their binding
        • 096 Books remarkable for their illustrations or for materials used
        • 097 Marks of ownership or origin
    • 1 PHILOSOPHY. PSYCHOLOGY
      • 101 Nature and role of philosophy
      • 11 Metaphysics
        • 111 General metaphysics. Ontology
        • 113/119 Cosmology. Philosophy of nature
      • 122/129 Special metaphysics
      • 13 Philosophy of mind and spirit. Metaphysics of spiritual life
        • 130.1 General concepts and laws
        • 130.2 Philosophy of culture. Cultural systems. Theory of cultural complexes
        • 130.3 Metaphysics of spiritual life
        • 133 The paranormal. The occult. Psi phenomena
      • 14 Philosophical systems and points of view
        • 140 Possible philosophical attitudes. System typology
        • 141 Kinds of viewpoint
      • 159.9 Psychology
        • 159.91 Psychophysiology (physiological psychology). Mental physiology
        • 159.92 Mental development and capacity. Comparative psychology
        • 159.93 Sensation. Sensory perception
        • 159.94 Executive functions
          • 159.942 Emotions. Affections. Sensibility. Feelings
          • 159.943 Conation and movement
          • 159.944 Work and fatigue. Efficiency
          • 159.946 Special motor functions
          • 159.947 Volition. Will
        • 159.95 Higher mental processes
        • 159.96 Special mental states and processes
        • 159.97 Abnormal psychology
        • 159.98 Applied psychology (psychotechnology) in general
      • 16 Logic. Epistemology. Theory of knowledge. Methodology of logic
        • 161/162 Fundamentals of logic
        • 164 Logistic. Symbolic logic. Mathematical logic. Logical calculus
        • 165 Theory of knowledge. Epistemology
          • 165.6/.8 Epistemological viewpoints and doctrines
        • 167/168 Logical methodology
      • 17 Moral philosophy. Ethics. Practical philosophy
        • 171 Individual ethics. Human duties to oneself
        • 172 Social ethics. Duties to one`s fellow humans
        • 173 Family ethics
        • 176 Sexual ethics. Sexual morality
        • 177 Ethics and society
    • 2 RELIGION. THEOLOGY
      • 2-1/-9 Special auxiliary subdivision for religion
        • 2-1 Theory and philosophy of religion. Nature of religion. Phenomenon of religion
          • 2-13 The Holy. The sacred. The supernatural. Object(s) of religion/worship
          • 2-14 God. Gods (Personalised god(s) as distinct from immanent spirits)
          • 2-15 Nature of god(s)
          • 2-17 The universe. Nature of the universe. Cosmology
          • 2-18 Man. Mankind. Humanity. Doctrinal anthropology
            • 2-184 Man's relation to god(s)
        • 2-2 Evidences of religion
          • 2-23 Sacred books. Scriptures. Religious texts
          • 2-25 Secondary literature. Pseudo-canonical works
          • 2-27 Critical works
          • 2-28 Other religious texts
        • 2-3 Persons in religion
          • 2-31 Originator, founder, central figure of the faith
          • 2-32 Messiah(s)
          • 2-34 Martyrs
          • 2-35 Ascetics. Hermits. Fakirs
          • 2-36 Saints. Bodhisattvas. Enlightened ones
          • 2-37 Mahatmas. Gurus. Wise men
          • 2-38 Charismatics. Persons with supernatural powers
        • 2-4 Religious activities. Religious practice
          • 2-42 Moral behaviour. Moral theology
          • 2-43 Social customs and practice. Social theology
          • 2-46 Charity. Support for others. Pastoral activities. Pastoral theology in the broad sense
          • 2-47 Education in religion
            • 2-475 Preaching (as education and instruction)
        • 2-5 Worship broadly. Cult. Rites and ceremonies
          • 2-523 Buildings for religious use. Ecclesiology
          • 2-526 Objects in worship. Furnishings and decorations
          • 2-53 Acts of worship (by participants)
          • 2-54 Ceremonies by purpose
          • 2-55 Sacraments. Sacramentals
          • 2-56 Celebration
        • 2-6 Processes in religion
          • 2-65 Comparison of religions
          • 2-67 Relations between faiths or with society in general. Religion and society
        • 2-7 Religious organization and administration
          • 2-72 Nature and structure of the organized religion, church. Ecclesiology
          • 2-73 Government of the religion
          • 2-74 Legal administration. Religious law. Canon law
          • 2-76 Recruitment. Missionary activity. Missions broadly. Missiology
          • 2-77 Organizational structure of the faith, religion
          • 2-78 Religious organizations. Religious societies and associations
        • 2-8 Religions characterised by various properties
          • 2-84 Properties relating to the state
          • 2-87 Schismatic groups. Heresies
        • 2-9 History of the faith, religion, denomination or church
      • 21/29 Religious systems. Religions and faiths
        • 21 Prehistoric and primitive religions
          • 212 Prehistoric religions
          • 213 Primitive religions
        • 22 Religions originating in the Far East
          • 221 Religions of China
            • 221.3 Taoism
          • 223 Religions of Korea
          • 225 Religions of Japan
        • 23 Religions originating in Indian sub-continent. Hindu religion in the broad sense
          • 233 Hinduism narrowly
          • 234 Jainism
          • 235 Sikhism
        • 24 Buddhism
          • 241 Hinayana Buddhism. The lesser vehicle. Theravada Buddhism. Pali school
          • 242 Mahayana Buddhism. The great vehicle
          • 243 Lamaism
          • 244 Japanese Buddhism
        • 25 Religions of antiquity. Minor cults and religions
          • 251 Ancient Egyptian religion
          • 252 Religions of Mesopotamia
          • 254 Religions of Iran
          • 255 Religions of classical antiquity
          • 257 Religions of Europe
          • 258 Religions of South and Central America. Pre-Columbian indigenous religions
        • 26 Judaism
          • 261 Religion of the Biblical period. Ancient Judaism. Old Testament religion
          • 262 Ashkenazi Judaism
          • 264 Sephardi Judaism
          • 265 Orthodox Judaism
          • 266 Progressive Judaism
          • 267 Modern movements arising from Judaism
        • 27 Christianity
          • 271/279 Christian churches and denominations
            • 271 Eastern Church. Eastern Christianity
            • 272/279 Western Church. Western Christianity
              • 272/273 Catholic church
                • 272 Roman Catholic church
                • 273 Non-Roman Catholic episcopal churches
              • 274/278 Protestant churches
                • 274 Protestantism generally. Protestants. Dissenters. Puritans
                • 275 Re-formed churches
                • 276 Anabaptists
                • 277 Free churches. Non-conformists
                • 278 Other protestant churches
              • 279 Modern Christian movements and churches
        • 28 Islam
          • 281 Sufism
          • 282 Sunni. Sunnite Islam
          • 284 Shi'a. Shi'ite Islam
          • 285 Babi-Baha'i
          • 286 Baha'i
        • 29 Modern spiritual movements
    • 3 SOCIAL SCIENCES
      • 303 Methods of the social sciences
      • 304 Social questions. Social practice. Cultural practice. Way of life (Lebensweise)
      • 305 Gender studies
      • 308 Sociography. Descriptive studies of society (both qualitative and quantitative)
      • 311 Statistics as a science. Statistical theory
        • 311.1 Fundamentals, bases of statistics
        • 311.2 Research technique. Preparation. Tabulation
        • 311.3 General organization of statistics. Official statistics
        • 311.4 Private statistics
      • 314/316 Society
        • 314 Demography. Population studies
          • 314.1 Population
        • 316 Sociology
          • 316.1 Object and scope of sociology
          • 316.2 Sociological points of view and trends
          • 316.3 Social structure. Society as a social system
            • 316.33 Basic elements and subsystems of global societies as sociological categories
            • 316.34 Social stratification. Social differentiation
            • 316.35 Social groups. Social organizations
            • 316.36 Marriage and family
          • 316.4 Social processes. Social dynamics
          • 316.6 Social psychology
          • 316.7 Sociology of culture. Cultural context of social life
      • 32 Politics
        • 321 Forms of political organization. States as political powers
        • 322 Relations between church and state. Policy towards religion. Church policy
        • 323 Home affairs. Internal policy
          • 323.1 Nationalist, popular, ethnic movements and problems. National and ethnic minorities
          • 323.2 Relation between people and state. Internal political activities
          • 323.4 Class war. Forms of class warfare
        • 324 Elections. Plebiscites. Referendums. Election campaigns. Electoral corruption, malpractice. Election results
        • 325 Opening up of territories. Colonization. Colonialism
        • 326 Slavery. Involuntary, unfree labour
        • 327 International relations. World, global politics. International affairs. Foreign policy
          • 327.2 Imperialism. Imperialistic policy. Political expansionism
          • 327.3 Internationalism. International movements, objectives
          • 327.5 International blocs. Tension, conflict
          • 327.7 Activity of international and intergovernmental organizations
          • 327.8 Political influence, pressure, on other states
        • 328 Parliaments. Representation of the people. Governments
        • 329 Political parties and movements
      • 33 Economics. Economic science
        • 330 Economics in general
          • 330.1 Science of economics. Basic economic concepts, theory. Value. Capital. Funds
          • 330.3 Dynamics of the economy. Economic movement
          • 330.4 Mathematical economics
          • 330.5 National property. National assets. Social product. Balance of the economy. Estimation of national product
          • 330.8 History of economic theories, doctrines, dogmas
        • 331 Labour. Employment. Work. Labour economics. Organization of labour
          • 331.1 Theory and organization of work. Relations between business firms and employees
          • 331.2 Salaries. Wages. Remuneration. Pay
          • 331.3 Working conditions other than pay
          • 331.4 Working environment. Workplace design. Occupational safety. Hygiene at work. Accidents at work
          • 331.5 Labour market. Employment
        • 332 Regional economics. Territorial economics. Land economics. Housing economics
          • 332.1 Regional economics. Territorial economics
          • 332.2 Land economics
          • 332.3 Land use
          • 332.5 Land requirement. Long-term planning of land use
          • 332.6 Land value. Value of plots, sites, holdings. Real-estate value. Productivity. Rents
          • 332.7 Trade in land, in real estate
          • 332.8 Economics of housing
        • 334 Forms of organization and cooperation in the economy
        • 336 Finance
          • 336.1 Public sector finance. Government finance in general
          • 336.2 Public revenue
          • 336.5 Public expenditure. State expenditure
          • 336.7 Money. Monetary system. Banking. Stock exchanges
        • 338 Economic situation. Economic policy. Management of the economy. Economic planning. Production. Services. Prices
          • 338.1 Economic situation. Trade cycle. Development of economic structure. Growth
          • 338.2 Economic policy. Control of the economy. Management of the economy. Economic planning
          • 338.3 Production
          • 338.4 Production and services according to economic sectors
            • 338.48 Tourism
          • 338.5 Prices. Price formation. Costs
        • 339 Trade. Commerce. International economic relations. World economy
          • 339.1 General questions of trade and commerce. Market
          • 339.3 Inland trade. Internal trade. Domestic trade
          • 339.5 Foreign trade. External trade. International trade
          • 339.7 International finance
          • 339.9 International economy generally. International economic relations. Global economy
      • 34 Law. Jurisprudence
        • 340 Law in general. Legal methods and auxiliary sciences
          • 340.1 Types and forms of law
            • 340.13 Positive law. Legal norm. Enacted law. Statute law. Ius scriptum. Operation of legal norm. Rules of its application
            • 340.14 Unwritten law. Non-statute law. Ius non scriptum. Other sources of law
          • 340.5 Comparative law
          • 340.6 Auxiliary legal sciences. Forensic psychology. Forensic chemistry. Forensic medicine
        • 341 International law
          • 341.1/.8 Public international law. Law of nations
            • 341.1 Law of international organizations
            • 341.2 Persons and things in international law
            • 341.3 Law of war. International legal relations in war
            • 341.4 International criminal law
            • 341.6 International arbitration. International adjudication, jurisdiction
            • 341.7 Diplomatic law. Laws of diplomacy
            • 341.8 Consular law
          • 341.9 International private law. Conflict of laws
        • 342 Public law. Constitutional law. Administrative law
          • 342.1 State. People. Nation. Power of the state
          • 342.2 State. Structure of states
          • 342.3 Supreme authority. Sovereignty. Forms of state. Forms of government
          • 342.4 Constitutions. Legislative assemblies. National assemblies
          • 342.5 Power of the state. System and function of organs of government
          • 342.6 Executive power of the state. Central organs of state government
          • 342.7 Fundamental rights. Human rights. Rights and duties of the citizen
          • 342.8 Electoral law. Voting. Electoral systems
          • 342.9 Administrative law
        • 343 Criminal law. Penal offences
          • 343.1 Criminal justice. Criminal investigation. Criminal proceedings
          • 343.2/.7 Criminal law
            • 343.2 Criminal law proper
            • 343.3/.7 Particular offences. Specific punishable acts
              • 343.3 Offences against the state
              • 343.4 Offences against fundamental liberties, human rights
              • 343.5 Offences against public credit, morality, the family
              • 343.6 Offences against the person
          • 343.8 Punishment. Execution of sentence. Crime prevention. Deterrence
          • 343.9 Criminology. Criminal sciences. Criminalistics
        • 344 Special criminal law. Military, naval, air force laws
        • 346 Economic law. Law of government control of the economy
          • 346.2 Subjects of economic law
          • 346.3 Economic liabilities. Economic contracts
          • 346.5 Regulation of economic order and control
          • 346.6 Regulation of prices, tariffs, finance, credits and accounts
          • 346.7 Regulation of individual sectors of the economy
          • 346.9 Enforcement of economic law. Sanctions. Supervision. Commercial disputes. Settlement. Legal protection
        • 347 Civil law
          • 347.1 Generalities of civil law
          • 347.2 Law of realty. Real rights. Things. Chattels
          • 347.3 Movables in general. Personalty
          • 347.4 Commitments. Contractual liabilities. Bonds. Contracts. Agreements
          • 347.5 Noncontractual liabilities. Torts
          • 347.6 Family law. Law of inheritance. Heirs. Successors
          • 347.7 Commercial law. Company law
          • 347.8 Laws of air, space, ether
          • 347.9 Legal procedure. Judiciary personnel and organization
        • 348 Ecclesiastical law. Canon law. Religious law (option)
        • 349 Special branches of law. Miscellaneous legal matters
      • 35 Public administration. Government. Military affairs
        • 351 Particular activities of public administration
        • 352/354 Levels of administration. Local, regional, central administration
          • 352 Lowest levels of administration. Local government. Municipal administration. Local authorities
          • 353 Middle levels of administration. Regional, provincial government. Regional authorities
            • 353.1 Primary divisions of a country. Regions (generally). States in a federation
            • 353.2 Provincial governments. Provinces. Departments. Counties
            • 353.5 Divisions of provinces. Subprefectures. Arrondissements. Kreise
            • 353.8 Special kinds of regional administration
            • 353.9 Independent administration of regions of a country. Ministries of regions
          • 354 High level, top level of administration. Central, national government
            • 354.1 Ministries for general business
        • 355/359 Military affairs. Art of war. Military science. Defence. Armed forces
          • 355 Military affairs generally
            • 355.1 Armed forces generally. Armed services. Military life
            • 355.2 Recruitment of forces. Requisition of supplies, resources. War potential. Levies
            • 355.3 General organization of the armed forces
            • 355.4 War operations in general. Tactics. Strategy. Theatre of war. History of campaigns
            • 355.5 Service in, tactics of, particular forces and units. Training of troops and officers. Tactical exercises
            • 355.6 Military administration
            • 355.7 Military establishments: organization, functions
          • 356/358 Individual branches of land and air forces
            • 356 Army service generally. Infantry. Foot soldiers
            • 357 Cavalry. Mounted troops. Motorized troops
            • 358 Artillery. Engineers. Aviation. Various technical units and their function
              • 358.1 Artillery
              • 358.4 Military aviation. Flying corps. Air force
          • 359 Naval forces. Military fleet. Navy: personnel, organization
      • 36 Safeguarding the mental and material necessities of life
        • 364 Social welfare
          • 364-1 Theories of social welfare
          • 364-2 Principles of assistance
          • 364-3 Social welfare agencies. Social welfare organizations
          • 364-4 People as providers of social welfare assistance
          • 364-5 Social welfare facilities
          • 364-6 Contributions and payments
          • 364-7 Social welfare operations. Welfare effort. Social services. Service provision
          • 364.2 Basic human needs. Requirements for well-being
          • 364.3 Social benefits. Social allowances. Social insurance. Social assistance
          • 364.4 Fields of practice in social work
          • 364.6 Social welfare issues
        • 365 Accommodation desires and their fulfilment. Safeguarding accommodation
        • 366 Consumerism
        • 368 Insurance. Communal provision through sharing of risk
      • 37 Education
        • 37.01/.09 Special auxiliary table for theory, principles, methods and organization of education
          • 37.01 Fundamentals of education. Theory. Policy etc.
          • 37.02 General questions of didactics and method
          • 37.04 Education in relation to the educand, pupil. Guidance
          • 37.06 Social problems. Human contacts, relationships
          • 37.07 Management aspects of educational institutions
          • 37.09 Organization of instruction
        • 373 Kinds of school providing general education
        • 374 Education and training out of school. Further education
        • 376 Education, teaching, training of special groups of persons. Special schools
        • 377 Specialized instruction. Vocational, technical, professional training. Vocational colleges, institutes. Polytechnics
        • 378 Higher education. Universities. Academic study
        • 379.8 Leisure
      • 39 Cultural anthropology. Ethnography. Customs. Manners. Traditions. Way of life
        • 391 Costume. Clothing. National dress. Fashion. Adornment
        • 392 Customs, manners, usage in private life
        • 393 Death. Treatment of corpses. Funerals. Death rites
        • 394 Public life. Pageantry. Social life. Life of the people
        • 395 Social ceremonial. Etiquette. Good manners. Social forms. Rank. Title
        • 398 Folklore in the strict sense
    • 5 MATHEMATICS. NATURAL SCIENCES
      • 502/504 Environmental science. Conservation of natural resources. Threats to the environment and protection against them
        • 502 The environment and its protection
          • 502.3/.7 Parts of the environment
        • 504 Threats to the environment
      • 51 Mathematics
        • 510 Fundamental and general considerations of mathematics
          • 510.2 General problems of mathematical logic. Foundations of mathematics
          • 510.3 Set theory
          • 510.6 Mathematical logic
        • 511 Number theory
        • 512 Algebra
        • 514 Geometry
          • 514.7 Differential geometry. Algebraic and analytic methods in geometry
        • 515.1 Topology
        • 517 Analysis
          • 517.9 Differential equations. Integral equations. Other functional equations. Finite differences. Calculus of variations. Functional analysis
        • 519.1 Combinatorial analysis. Graph theory
        • 519.2 Probability. Mathematical statistics
        • 519.6 Computational mathematics. Numerical analysis
        • 519.7 Mathematical cybernetics
        • 519.8 Operational research (OR): mathematical theories and methods
          • 519.83 Game theory
          • 519.85 Mathematical programming
      • 52 Astronomy. Astrophysics. Space research. Geodesy
        • 520 Astronomical instruments and techniques
        • 521 Theoretical astronomy. Celestial mechanics
          • 521.9 Astrometry. Spherical astronomy
        • 523 The Solar System
          • 523.3 Earth-Moon system
          • 523.4 Planets and their satellites. Planetology
          • 523.6 Interplanetary medium. Comets. Meteors. Meteorites
          • 523.9 The Sun. Solar physics
        • 524 Stars. Stellar systems. The Universe
          • 524.1 Cosmic rays. Primary cosmic rays
          • 524.3 Stars
          • 524.4 Star clusters. Associations of stars
          • 524.5 Interstellar medium. Galactic nebulae
          • 524.6 The Galaxy (Milky Way)
          • 524.7 Extragalactic systems
          • 524.8 The Universe. Metagalaxy. Cosmology
        • 528 Geodesy. Surveying. Photogrammetry. Remote sensing. Cartography
          • 528.1 Theory of errors and adjustment in geodesy and photogrammetry
          • 528.2 Figure of the Earth. Earth measurement. Mathematical geodesy. Physical geodesy. Astronomical geodesy
          • 528.3 Geodetic surveying
          • 528.4 Field surveying. Land surveying. Cadastral survey. Topography. Engineering survey. Special fields of surveying
          • 528.5 Geodetic instruments and equipment
          • 528.7 Photogrammetry: aerial, terrestrial
          • 528.8 Remote sensing
          • 528.9 Cartography. Mapping (textual documents)
      • 53 Physics
        • 53.01/.09 Special auxiliary subdivision for physics
          • 53.01 Theory and nature of phenomena
          • 53.02 General laws of phenomena
          • 53.03 Production and causes of phenomena
          • 53.04 Effects of phenomena
          • 53.05 Observation and recording of phenomena. Visual indication of phenomena
          • 53.06 Application, utilization of phenomena
          • 53.07 Apparatus for production and study of phenomena
          • 53.08 General principles and theory of measurement and the design of measuring apparatus. Measurement methods
          • 53.09 Dependence of phenomena on certain fundamental physical effects
        • 531/534 Mechanics
          • 531 General mechanics. Mechanics of solid and rigid bodies
            • 531-1/-9 Special auxiliary subdivision for mechanics
              • 531-1 One-dimensional. Lines
              • 531-2 Two-dimensional. Planes. Surfaces
              • 531-3 Three-dimensional. Bodies. Spaces
              • 531-4 Hyperspace (space of more than three dimensions)
              • 531-9 Non-Euclidean spaces
            • 531.1 Kinematics. Mathematical-mechanical geometry of motion
            • 531.2 Statics. Forces. Equilibrium. Attraction
            • 531.3 Dynamics. Kinetics
            • 531.4 Work. Weight. Mass. Friction. Passive resistance
            • 531.5 Gravity. Gravitation. Pendulums. Ballistics
            • 531.6 Mechanical energy. Conservation of mechanical energy
            • 531.7 Measurement of geometric and mechanical quantities: instruments, methods and units
            • 531.8 Theory of machines. Technical mechanics in general
          • 532 Fluid mechanics in general. Mechanics of liquids (hydromechanics)
            • 532.1 Hydrostatics in general
            • 532.2 Equilibrium of liquids
            • 532.3 Immersed bodies (submerged bodies). Floating bodies
            • 532.5 Liquid motion. Hydrodynamics
            • 532.6 Surface phenomena. Surface tension. Capillarity
            • 532.7 Kinetic theory of liquids. Osmosis. Solution and solutions
          • 533 Mechanics of gases. Aeromechanics. Plasma physics
            • 533.1 Properties of gases
            • 533.2 Elasticity. Compressibility. Liquefaction. Gas mixing. Gaseous mixtures
            • 533.5 Rarefied gases. Vacuum physics
            • 533.6 Aerodynamics
            • 533.7 Kinetic theory of gases. Continuity of state
            • 533.9 Plasma physics
          • 534 Vibrations. Waves. Acoustics
            • 534.1 Vibration of bodies. Excitation of vibrations. Vibratory formations with distributed mass and elasticity
            • 534.2 Propagation of vibrations. Processes in the acoustic field
            • 534.3 Musical sounds and perception
            • 534.4 Analysis and synthesis of sounds
            • 534.5 Composition of vibrations
            • 534.6 Acoustic measurements
            • 534.7 Physiological acoustics. Medical acoustics
            • 534.8 Applications of acoustics (theory)
        • 535 Optics
          • 535-1/-9 Special auxiliary subdivision for optics
            • 535-1/-3 Radiation according to wavelength. Hertzian waves. Light colours
              • 535-1 Long waves. Infrared
              • 535-2 Visible light. Colours
              • 535-3 Short waves
            • 535-4 Polarized light
            • 535-5 Natural light
            • 535-6 Partially polarized light
            • 535-7 Totally reflected light
          • 535.1 Theory of light
          • 535.2 Propagation and energetics of radiation. Photometry
          • 535.3 Propagation. Reflection. Refraction. Absorption. Emission
          • 535.4 Interference. Diffraction. Scattering by diffraction
          • 535.5 Polarization. Double refraction. Dispersion in anisotropic bodies
          • 535.6 Colours and their properties. Colour theory
          • 535.8 Applications of optics in general
        • 536 Heat. Thermodynamics. Statistical physics
          • 536.1 General theory of heat
          • 536.2 Heat conduction. Heat transfer
          • 536.3 Effect of bodies on heat radiation
          • 536.4 Effect of heat input and temperature on volume and structure of bodies
          • 536.5 Temperature. Temperature scales. Temperature measurement. Thermometers. Temperature control
          • 536.6 Measurement of heat quantity. Calorimetry
          • 536.7 Thermodynamics. Energetics
        • 537 Electricity. Magnetism. Electromagnetism
          • 537.2 Static electricity. Electrostatics
          • 537.3 Current electricity. Electric current. Electrokinetics
          • 537.5 Electron and ion phenomena
          • 537.6/.8 Magnetism. Electromagnetism
            • 537.6 Magnetism
            • 537.8 Electromagnetism. Electromagnetic field. Electrodynamics
        • 538.9 Condensed matter physics. Solid state physics
        • 539 Physical nature of matter
          • 539.1 Nuclear physics. Atomic physics. Molecular physics
          • 539.2 Properties and structure of molecular systems
          • 539.3 Elasticity. Deformation. Mechanics of elastic solids
          • 539.4 Strength. Resistance to stress
          • 539.5 Properties of materials affecting deformability
          • 539.6 Intermolecular forces
          • 539.8 Other physico-mechanical effects
      • 54 Chemistry. Crystallography. Mineralogy
        • 54-1/-4 Special auxiliary subdivision for state of substance, chemicals
          • 54-1 State of substance
          • 54-3 Particular kinds of compound
          • 54-4 Chemicals. Reagents
        • 54.01/.08 Special auxiliary subdivision for composition, production, preparation and analysis
          • 54.01 Chemical substances and systems. Origin. Occurrence. Phases
          • 54.02 Composition. Structure. Isotopes
          • 54.05 Production. Preparation. Isolation. Purification etc.
          • 54.06 Analysis, investigation and handling in general
          • 54.07 Apparatus and equipment for preparation, investigation and analysis
          • 54.08 Measurement principles, methods, techniques. Instrumentation
        • 542 Practical laboratory chemistry. Preparative and experimental chemistry
          • 542.1 Chemical laboratories
          • 542.2 Laboratory apparatus and instrumentation in general. Laboratory methods in general
          • 542.3 Measurement of weight, mass. Measurement of volume
          • 542.4 Heat and cold application
          • 542.5 Use of flames. Blowlamps
          • 542.6 Working with liquids
          • 542.7 Working with gases
          • 542.8 Physical, physicochemical and electrical operations
          • 542.9 Chemical reactions. Special chemical processes
        • 543 Analytical chemistry
          • 543.2 Chemical methods of analysis
          • 543.3 Water sampling and analysis
          • 543.4 Spectral analysis methods. Optical analysis methods
          • 543.5 Physicochemical methods of analysis (other than optical methods)
          • 543.6 Analysis of different substances. Analytical control in production conditions
          • 543.9 Analysis by biological and biochemical reactions. Biological methods used for analytical purposes
        • 544 Physical chemistry
          • 544.01/.07 Special auxiliary subdivision for physical chemistry
            • 544.01 Chemical substances and systems. Origin. Natural state. Phases
            • 544.02 Chemical composition. Structure. Isotopes etc.
            • 544.03 Physical properties and phenomena. Constants. Effects acting on state and properties of matter
            • 544.07 Instruments and equipment
          • 544.1 Chemical structure of matter
          • 544.2 Physical chemistry of solids, liquids and gases
          • 544.3 Chemical thermodynamics
          • 544.4 Chemical kinetics. Catalysis
          • 544.5 Chemistry of high energy processes
          • 544.6 Electrochemistry
          • 544.7 Chemistry of surface phenomena and colloids
        • 546 Inorganic chemistry
          • 546.1 Nonmetals and metalloids in general
          • 546.3 Metals in general
        • 547 Organic chemistry
          • 547.1 Classification of organic compounds. Element-organic compounds
        • 548/549 Mineralogical sciences. Crystallography. Mineralogy
          • 548 Crystallography
            • 548.1 Mathematical crystallography. Continuum theory of crystals
            • 548.2 Crystal growths. Crystalline aggregates
            • 548.3 Crystal chemistry
            • 548.4 Irregularities in crystals
            • 548.5 Formation, growth and solution of crystals
            • 548.7 Fine structure of crystals. Discontinuum theory of crystals
          • 549 Mineralogy. Special study of minerals
            • 549.2/.8 Systematic mineralogy
              • 549.2 Native elements and alloys
              • 549.3 Sulphides. Sulpho-salts
              • 549.4 Halides
              • 549.5 Oxygen compounds
              • 549.6 Silicates. Titanates. Zirconates. Stannates
              • 549.7 Other compounds of oxyacids
              • 549.8 Organic minerals
      • 55 Earth Sciences. Geological sciences
        • 550 Ancillary sciences of geology etc.
          • 550.1 Physiography
          • 550.2 Geoastronomy. Cosmogony
          • 550.3 Geophysics
          • 550.4 Geochemistry
          • 550.7 Geobiology. Geological actions of organisms
          • 550.8 Applied geology and geophysics. Geological prospecting and exploration. Interpretation of results
          • 550.93 Geochronology. Geological dating. Determination of absolute geological age
        • 551 General geology. Meteorology. Climatology. Historical geology. Stratigraphy. Palaeogeography
          • 551.1/.4 General geology
            • 551.1 General structure of the Earth
            • 551.2 Internal geodynamics (endogenous processes)
              • 551.21 Vulcanicity. Vulcanism. Volcanoes. Eruptive phenomena. Eruptions
              • 551.24 Geotectonics
            • 551.3 External geodynamics (exogenous processes)
              • 551.32 Glaciology
            • 551.4 Geomorphology. Study of the Earth's physical forms
              • 551.44 Speleology. Caves. Fissures. Underground waters
              • 551.46 Physical oceanography. Submarine topography. Ocean floor
          • 551.5 Meteorology
            • 551.58 Climatology
          • 551.7 Historical geology. Stratigraphy
          • 551.8 Palaeogeography
        • 552 Petrology. Petrography
          • 552.1 Rock characteristics and properties generally. Physical and physicochemical petrology
          • 552.3/.6 Igneous, sedimentary and metamorphic petrology
            • 552.3 Magmatic rocks. Igneous rocks
            • 552.4 Metamorphic rocks
            • 552.5 Sedimentary rocks
            • 552.6 Meteorites
        • 553 Economic geology. Mineral deposits
          • 553.2 Ore formation. Mineral formation
          • 553.3/.9 Ore and other mineral deposits. Natural resources
            • 553.3 Ore deposits (metalliferous mineral deposits) in general. Iron and manganese ores
            • 553.4 Ore deposits other than iron and manganese
            • 553.5 Natural stone deposits
            • 553.6 Deposits of various inorganic economic minerals and earths (mainly nonmetalliferous)
            • 553.7 Mineral springs
            • 553.8 Deposits of precious and semiprecious stones. Gemstone deposits
            • 553.9 Deposits of carbonaceous rocks. Hydrocarbon deposits
        • 556 Hydrosphere. Water in general. Hydrology
          • 556.3 Groundwater hydrology. Geohydrology. Hydrogeology
          • 556.5 Surface-water hydrology. Land hydrology
      • 56 Palaeontology
      • 57 Biological sciences in general
        • 57.01/.08 Special auxiliary subdivision for theoretical aspects, characteristics, factors etc. in biology
          • 57.01 General laws. Theoretical aspects. Characteristics. Properties
          • 57.02 Biological and ethological processes
          • 57.03 Pattern of property variations
          • 57.04 Factors. Influences
          • 57.05
          • 57.06 Nomenclature and classification of organisms. Taxonomy
          • 57.07 Analytical palaeontology
          • 57.08 Biological techniques, experimental methods and equipment in general
        • 572 Physical anthropology
          • 572.1/.4 Anthropogeny. Human development in general. Origin of the human species
          • 572.9 Special anthropogeography. Individual human ancestry groups
        • 573 General and theoretical biology
        • 574 General ecology and biodiversity
        • 575 General genetics. General cytogenetics
        • 576 Cellular and subcellular biology. Cytology
        • 577 Material bases of life. Biochemistry. Molecular biology. Biophysics
        • 578 Virology
        • 579 Microbiology
          • 579.2 General microbiology
          • 579.6 Applied microbiology
          • 579.8 Classification and systematics of microorganisms
      • 58 Botany
        • 581 General botany
          • 581.1 Plant physiology
          • 581.2 Plant diseases. Plant pathology. Phytopathology
          • 581.3 Embryology of plants
          • 581.4 Plant morphology. Plant anatomy
          • 581.5 Habits of plants. Plant behaviour. Plant ecology. Plant ethology. The plant and its environment. Bionomics of plants
          • 581.6 Applied botany. Use of plants. Technobotany. Economic botany
          • 581.8 Plant histology
          • 581.9 Geographic botany. Plant geography (phytogeography). Floras. Geographic distribution of plants
        • 582 Systematic botany
          • 582.091/.099 Special auxiliary subdivisions for classification of plants according to size and form
            • 582.091 Trees (large woody plants with trunk)
            • 582.093 Shrubs (smaller woody plants without single trunk)
            • 582.095 Undergrowth. Undershrubs (e.g. brambles - Rosoideae)
            • 582.097 Woody climbers (e.g. ivy - Araliaceae)
            • 582.099 Herbaceous or non-woody plants (often called 'plants' or 'flowers')
          • 582.23 Bacteria
          • 582.24 Protista (Protoctista). Chromista. Protozoa
          • 582.261/.279 Algae. Phycology
          • 582.28 Fungi (Eumycota, Eumycetes). True fungi. Moulds. Mycology
          • 582.29 Lichens
          • 582.32/.998 Plantae
            • 582.32 Bryophyta (Musci). Bryology
            • 582.361/.99 Tracheophyta. Vascular plants
              • 582.37/.39 Pteridophyta. Ferns. Fern allies. Fernlike spore plants
              • 582.4 Seed plants in general. Spermatophyta. Phanerogams. Siphonogamous embryophyta.
                • 582.42/.49
                  • 582.44
                  • 582.46
                  • 582.47
              • 582.5/.9 Angiospermae (Magnoliophyta). Angiosperms. Flowering plants. Covered-seed plants. Later seed plants
                • 582.5
                  • 582.51
                  • 582.53
                  • 582.54/.56
                    • 582.54
                    • 582.56
                  • 582.57
                  • 582.58
                • 582.6/.9 Dicotyledonae (Magnoliopsida)
                  • 582.62
                    • 582.622
                    • 582.623
                    • 582.628
                  • 582.63
                    • 582.634
                    • 582.637
                    • 582.639
                  • 582.65
                  • 582.66
                  • 582.67
                    • 582.672
                    • 582.673
                    • 582.677
                  • 582.68
                    • 582.681
                    • 582.682
                    • 582.683
                    • 582.685
                    • 582.688
                  • 582.7 Rosidae
                    • 582.70
                    • 582.73
                    • 582.74
                    • 582.75
                    • 582.77
                    • 582.79
                  • 582.82
                  • 582.9 Asteridae
                    • 582.92
                    • 582.93
                    • 582.94
                    • 582.99
      • 59 Zoology
        • 591 General zoology
          • 591.1 Animal physiology
          • 591.2 Diseases of (undomesticated) animals. Animal pathology
          • 591.3 Animal embryology. Animal ontogeny. Development of the individual organism
          • 591.4 Study of animal organs. Animal organology. Animal anatomy. Zootomy
          • 591.5 Animal habits. Animal behaviour. Ecology. Ethology. Animal and environment. Bionomy
          • 591.6 Economic zoology. Applied zoology
          • 591.8 Animal histology
          • 591.9 Geographic zoology. Zoogeography. Fauna. Geographic distribution of animals
        • 592/599 Systematic zoology
          • 592 Invertebrata
          • 593.1
          • 593.4
          • 594 Mollusca. Bryozoa. Brachiopoda
          • 595 Articulata
            • 595.7 Insecta (Hexapoda). Insects. Entomology
          • 596/599 Chordata
            • 596.2 Urochordata (Tunicata)
            • 597/599 Vertebrata
              • 597.2/.5 Pisces (Fishes) (scientifically outdated class)
                • 597.3
                  • 597.31
                    • 597.311
                    • 597.317
                • 597.4/.5
                  • 597.42/.55
                    • 597.42
                    • 597.5
                      • 597.535
                      • 597.541
                      • 597.55
                        • 597.551
                        • 597.552
                        • 597.555
                        • 597.556
              • 597.6/.9 Amphibia
                • 597.7 Gymnophiona
                • 597.8 Anura
                • 597.9 Caudata
                  • 597.91
                  • 597.94
              • 598 Sauropsida. Synapsida
                • 598.1/.2
                • 598.1 Reptilia (Reptiles)
                  • 598.125
                  • 598.16
                    • 598.161
                    • 598.162
                    • 598.166
                  • 598.18
                    • 598.182
                  • 598.19
                    • 598.191
                    • 598.192
                      • 598.192.32
                      • 598.192.63
                      • 598.192.77
                • 598.2 Aves (Birds)
                  • 598.221
                  • 598.231
                  • 598.233
                  • 598.234
                  • 598.235
                  • 598.24
                    • 598.241
                    • 598.243
                    • 598.244
                  • 598.25
                  • 598.26
                  • 598.271
                  • 598.272
                  • 598.274
                  • 598.279
                  • 598.282
                  • 598.283
                  • 598.284
                  • 598.285
                  • 598.286
                  • 598.287
                  • 598.288
                  • 598.289
                  • 598.291
                  • 598.292
                  • 598.293
                  • 598.294
                  • 598.296
              • 599 Mammalia (Mammals)
                • 599.1 Prototheria
                • 599.2 Metatheria
                  • 599.22 Diprotodontia
                • 599.3/.8 Eutheria
                  • 599.31 Pholidota. Xenarthra
                    • 599.311
                    • 599.312
                  • 599.32 Rodentia. Lagomorpha
                    • 599.322
                    • 599.324
                    • 599.325
                  • 599.35/.38 Insectivora (Insectivorous mammals)
                    • 599.36
                  • 599.39 Dermoptera. Cynocephalidae
                  • 599.4 Chiroptera (Bats)
                  • 599.5 Cetacea and Sirenia
                    • 599.51
                    • 599.53
                    • 599.55
                  • 599.61/.73 Ungulata
                    • 599.61 Proboscidea
                    • 599.62 Hyracoidea. Procaviidae
                    • 599.68 Tubulidentata. Orycteropodidae
                    • 599.72 Perissodactyla (Odd-toed ungulates)
                      • 599.721
                      • 599.722
                      • 599.723
                    • 599.73 Artiodactyla (Even-toed ungulates)
                      • 599.735
                  • 599.74 Carnivora (Carnivorans)
                    • 599.742.5
                    • 599.742.6
                    • 599.742.7
                    • 599.743
                    • 599.744
                    • 599.745
                  • 599.78 Scandentia
                  • 599.8 Primates
                    • 599.81 Prosimii (Prosimians)
                      • 599.813
                      • 599.815
                      • 599.818
                    • 599.82/.89 Simiiformes (Simians)
                      • 599.82 Platyrrhini
                      • 599.85
                      • 599.88/.89
                        • 599.88 Hylobatidae
                        • 599.89 Hominidae
    • 6 APPLIED SCIENCES. MEDICINE. TECHNOLOGY
      • 60 Biotechnology
        • 601 Fundamental concepts
        • 602 Processes and techniques in biotechnology
        • 604 Biotechnology products
        • 606 Applications of biotechnology
        • 608 Issues in biotechnology
      • 61 Medical sciences
        • 611/612 Human biology
          • 611 Anatomy. Human and comparative anatomy
          • 612 Physiology. Human and comparative physiology
            • 612.1/.8 Systematic physiology
              • 612.1 Blood. Cardiovascular, circulatory system
              • 612.2 Respiration. Breathing. Respiratory system
              • 612.3 Alimentation. Eating. Digestion. Nutrition
              • 612.4 Glandular system. Secretion. Excretion
              • 612.5 Animal heat. Thermal processes
              • 612.6 Reproduction. Growth. Development
              • 612.7 Motor functions. Organs of locomotion. Voice. Integument
              • 612.8 Nervous system. Sensory organs
        • 613 Hygiene generally. Personal health and hygiene
          • 613.2 Dietetics. Nutrition principles applied to feeding and foods
          • 613.3 Drinks. Curative drinks. Medicinal waters. Liquid diet
          • 613.4 Personal hygiene. Clothing
          • 613.5 Hygiene of dwellings
          • 613.6 Occupational health hazards. Occupational health and hygiene
          • 613.7 Health and hygiene of leisure, recreation, sleep
          • 613.8 Health and hygiene of the nervous system. Health and ethics
          • 613.9 Health and hygiene in relation to age, sex, ethnicity
        • 614 Public health and hygiene. Accident prevention
          • 614.1 Population. Depopulation
          • 614.2 Public and professional organization of health
          • 614.3 Sanitary inspection and control
            • 614.39 National health services
          • 614.4 Prevention and control of communicable (infectious, contagious) diseases. Prevention of epidemics
          • 614.6 Cemetery hygiene. Disposal of the dead
          • 614.7 Hygiene of air, water, soil. Pollution and its control
          • 614.8 Accidents. Risks. Hazards. Accident prevention. Personal protection. Safety
          • 614.9 Animal health. Veterinary hygiene
        • 615 Pharmacology. Therapeutics. Toxicology
          • 615.1 General and professional pharmacy
          • 615.2 Medicaments according to their principal action
          • 615.3 Medicaments according to their origin
          • 615.4 Pharmaceutical preparations. Medical material. Equipment
          • 615.8 Physiotherapy. Physical therapy. Radiotherapy. Other nonmedicinal therapeutic treatment
          • 615.9 General toxicology. General studies of poisons and poisoning (intoxication)
        • 616 Pathology. Clinical medicine
          • 616-001/-009 Special auxiliary subdivision for morbid processes
            • 616-001 Traumata. Injuries. Wounds
            • 616-002 Inflammation. Irritation. Engorgement (hyperaemia). Mucous congestion
            • 616-003 Regressive and reparative processes
            • 616-004 Sclerosis. Hardening (induration). Cirrhosis
            • 616-005 Local circulatory disorders
            • 616-006 Tumours. Neoplasms. Blastomata. Choristomata. Hamartomata. Oncology
            • 616-007 Defective structural development. Physiological deformities. Malformations. Hemiterata. Oversized, undersized organs. Teratology. Monsters. Abnormalities
            • 616-008 Functional and metabolic disorders
            • 616-009 Neural (nervous) disorders
          • 616-01/-099 Special auxiliary subdivision for general aspects of pathology
            • 616-01 Various aspects of disease, patients and medical intervention
            • 616-02 Aetiology. Science of the causes of disease
            • 616-03 Various forms of disease, of treatment, of administration of medicaments
            • 616-05 Persons and personal characteristics in pathology. Characteristics of the patient
            • 616-06 Complications. Consequences. Repercussions. Concurrence, simultaneous state. Correlation. Previous illnesses. Previous state of health. Antagonism of two diseases
            • 616-07 Semeiology. Symptomatology. Signs and symptoms. Examination. Diagnosis. Propaedeutics
            • 616-08 Treatment
            • 616-091 Pathological anatomy. Morbid anatomy
            • 616-092 Pathological physiology. Processes, mode of action of diseases. Pathogenesis. Study of origin of diseases
            • 616-093 Microbial techniques
            • 616-094 Microbial morphology
            • 616-095 Microbial physiology
            • 616-097 Immunogenicity
            • 616-098 Microbial physics, chemistry, metabolism, catabolism
            • 616-099 Poisoning. Intoxication
          • 616-71/-78 Special auxiliary subdivision for medical and surgical instrumentation and equipment
            • 616-71 Medical instruments and equipment in general
            • 616-72 Surgical and therapeutic instruments
            • 616-74 Reinforcement and reparative materials and equipment
            • 616-76 Corrective and protective appliances, aids etc.
            • 616-77 Prosthetic materials and parts. Artificial organs etc.
            • 616-78 Machines and mechanical apparatus
          • 616.1/.9 Special pathology
            • 616.1 Pathology of the circulatory system, blood vessels. Cardiovascular complaints
            • 616.2 Pathology of the respiratory system. Complaints of the respiratory organs
            • 616.3 Pathology of the digestive system. Complaints of the alimentary canal
              • 616.31 Stomatology. Oral cavity. Mouth. Diseases of the mouth and teeth
            • 616.4 Pathology of the lymphatic system, haemopoietic (haematopoietic) organs, endocrines
            • 616.5 Skin. Common integument. Clinical dermatology. Cutaneous complaints
            • 616.6 Pathology of the urogenital system. Urinary and sexual (genital) complaints. Urology
            • 616.7 Pathology of the organs of locomotion. Skeletal and locomotor systems
            • 616.8 Neurology. Neuropathology. Nervous system
              • 616.89 Psychiatry. Pathological psychiatry. Psychopathology. Phrenopathies. Psychoses. Mental abnormality. Morbid mental states. Behavioural and emotional disturbances
            • 616.9 Communicable diseases. Infectious and contagious diseases, fevers
        • 617 Surgery. Orthopaedics. Ophthalmology
          • 617.3 Orthopaedics in general
          • 617.7 Ophthalmology. Eye disorders and treatment
        • 618 Gynaecology. Obstetrics
      • 62 Engineering. Technology in general
        • 62-1/-9 Special auxiliary subdivision for technology in general
          • 62-1 General characteristics of machines etc.
          • 62-2 Fixed and movable parts, components of machines
          • 62-3 Fluid control parts and drives. Valves, closures etc.
          • 62-4 State, condition, form of materials, surfaces, objects, products
          • 62-5 Operation and control of machines and processes
          • 62-6 Fuel and other heat-source characteristics of machinery and installations
          • 62-7 Devices for servicing, maintenance and protection of machines
          • 62-8 Machines according to motive power, propulsive force. Source of energy of machine
          • 62-9 Variables, conditions and characteristics of production processes, plant and equipment
            • 62-91 State of material: characteristics and variables
            • 62-92 Reactions in terms of reagents. Reagents
            • 62-93 Processes, machines and equipment according to mode of working, continuity, associations, media
            • 62-94 Direction, velocity, rate, duration of processes etc.
            • 62-95 Simple and multiple processes. Single-stage and multistage processes
            • 62-96 Processes in terms of altering product properties. Modification in general
            • 62-97 Thermal characteristics. Temperature. Temperature range
            • 62-98 Pressure. Pressure range
        • 620 Materials testing. Commercial materials. Power stations. Economics of energy
          • 620.3 Nanotechnology
          • 620.9 Economics of energy in general
        • 621 Mechanical engineering in general. Nuclear technology. Electrical engineering. Machinery
          • 621.1 Heat engines in general. Generation, distribution and use of steam. Steam engines. Boilers
          • 621.22 Hydraulic energy. Water power. Hydraulic machinery
          • 621.3 Electrical engineering
          • 621.4 Heat engines (except steam engines)
          • 621.5 Pneumatic energy, machinery and tools. Refrigeration
          • 621.6 Fluids handling, storage and distribution plant and techniques
          • 621.7 Mechanical technology in general: processes, tools, machines, equipment
          • 621.8 Machine elements. Motive power engineering. Materials handling. Fixings. Lubrication
          • 621.9 Working or machining with chip formation. Abrasive working. Hammers and presses
        • 622 Mining
          • 622.1 Preliminary investigation. Mine surveying and mapping. Exploration of mineral deposits (surface and underground)
          • 622.2 Mining operations. Exploration, opening-up, development, working of mineral deposits
          • 622.3 Mining of specific minerals, ores, rocks
          • 622.4 Ventilation, air conditioning, heating and illumination of mines
          • 622.5 Mine drainage. Unwatering (dewatering)
          • 622.6 Haulage and handling. Hoisting. Winding. Surface transport
          • 622.7 Treatment, processing of minerals. Mineral dressing. Ore preparation
          • 622.8 Mining hazards, accidents and damage. Health protection and safety in mines
        • 623 Military engineering
          • 623.1/.7 Land-based military engineering. Artillery
            • 623.1/.3 Field engineering. Fortifications. Defence works
              • 623.1 Fortresses. Permanent fortifications. Fortified lines, areas
              • 623.2 Assault and defence works. Siege works. Field fortifications. Trench works
              • 623.3 Land minefields. Field obstacles. Flooding
            • 623.4 Armaments. Ordnance. Arms. Weapons. Guns. Artillery. Small arms. Side arms. Armoured and other service vehicles. Ammunition and war gases. Guided missiles and rockets
            • 623.5 Ballistics. Gunnery. Theoretical and experimental problems
            • 623.6 Field engineering equipment and operations. Lines of communication. Radar countermeasures. Military topography
            • 623.7 Military and naval aviation. Air defence
          • 623.8/.9 Naval engineering
            • 623.8 Naval construction. Naval bases. Warships and other vessels
            • 623.9 Material and equipment of naval forces. Protection and armament of vessels. Submarine defences
        • 624 Civil and structural engineering in general
          • 624.01/.07 Special auxiliary subdivision for civil and structural engineering
            • 624.01 Structures and structural parts according to material and method of construction
            • 624.03 Size, permanence, location and shape of structures
            • 624.04 Structural design. Graphical and analytical statics for investigation and calculation of structures
            • 624.05 Site, organization and plant. Construction methods
            • 624.07 Structural elements. Load-bearing members
          • 624.1 Substructures. Earthworks. Foundations. Tunnelling
          • 624.21/.8 Bridge construction
            • 624.3 Truss bridges (open-web, lattice girder bridges)
            • 624.5 Cable bridges. Suspension bridges
            • 624.6 Arch bridges
            • 624.8 Movable bridges
          • 624.9 Superstructures (except bridges). Superstructures complete in themselves
        • 625 Civil engineering of land transport. Railway engineering. Highway engineering
          • 625.1/.5 Railways. Tramways. Cableways
            • 625.1 Railways in general. Permanent way. Track construction
            • 625.5 Cable railways. Funicular railways. Suspension railways. Aerial ropeways and cableways. Telphers
          • 625.7/.8 Highway engineering
            • 625.7 Highways in general. Roads. Carriageways. Streets. Rural and urban road systems
            • 625.8 Hard surfacing of highways. Pavement, carpet or wearing course. Preparation and use of materials
        • 626/627 Hydraulic engineering and construction. Water (aquatic) structures
          • 626 Hydraulic engineering in general
            • 626.1 Inland navigable waterways. Canals. Canalized rivers
            • 626.4 Locks
            • 626.5 Lifting gear and inclined planes for vessels
            • 626.8 Agricultural hydraulics. Irrigation, drainage and reclamation engineering
            • 626.9 Maritime canals. Ship canals
          • 627 Natural waterway, port, harbour and shore engineering. Navigational, dredging, salvage and rescue facilities. Dams and hydraulic power plant
            • 627.2 Ports, harbours and roadsteads: engineering and construction works in general
            • 627.3 In-port facilities. Docks. Wharfs. Quays. Installations and equipment
            • 627.4 River bank protection. Straightening of rivers and streams. Other river improvement works
            • 627.5 Other waterway protection and improvement works. Dykes. Coast protection. Land drainage and reclamation
            • 627.7 Navigational facilities. Channel maintenance. Marine salvage and rescue facilities
            • 627.8 Dams. Hydraulic power plant works
        • 628 Public health engineering. Water. Sanitation. Illuminating engineering
          • 628.1 Water supply. Water treatment. Water consumption
          • 628.2 Urban water removal. Town drainage. Sewerage
          • 628.3 Sewage. Treatment, disposal, utilization of sewage
          • 628.4 Urban hygiene. Wastes. Refuse. Rubbish. Garbage. Collection and disposal of town wastes
          • 628.5 Measures against industrial and other nuisances
          • 628.6 Drainage and sanitary installations of buildings (particularly public health requirements)
          • 628.8 Indoor climate. Air conditioning. Heating. Ventilating
          • 628.9 Lighting. Illumination engineering
        • 629 Transport vehicle engineering
          • 629.01/.08 Special auxiliary subdivision for transport vehicle engineering
            • 629.01 Vehicle design principles: characteristics, capabilities, tests
            • 629.02 Vehicle structure, construction principles, general layout and parts
            • 629.03 Propulsion systems
            • 629.04 Interior layout: accommodation, installation, equipment for persons and freight
            • 629.05 Guidance, control-initiation and navigation systems and instruments (vehicle-borne)
            • 629.06 Vehicle auxiliary systems and devices
            • 629.07 Technical aspects of vehicular operations. Operational techniques
            • 629.08 Base equipment, installations and corresponding technical procedures
          • 629.3 Land vehicle engineering (excluding rail vehicles)
          • 629.4 Rail vehicle engineering. Locomotives. Rolling stock. Railway yards. Installations and services concerned with rolling stock
          • 629.5 Watercraft engineering. Marine engineering. Boats. Ships. Boatbuilding and shipbuilding
          • 629.7 Air and space transport engineering. Aeronautics and aircraft. Rockets and missiles. Astronautics and spacecraft
      • 63 Agriculture and related sciences and techniques. Forestry. Farming. Wildlife exploitation
        • 630 Forestry
          • 630*0 Forests, forestry and the utilization of forest products
          • 630*1 Factors of the environment. Forest biology
          • 630*2 Silviculture
          • 630*3 Work science (work studies) in forestry. Harvesting of wood: logging and transport. Forest engineering
          • 630*4 Forest injuries and protection
          • 630*5 Forest mensuration. Increment, development and structure of stands. Surveying and mapping
          • 630*6 Forest management. Business economics of forestry. Administration and organization of forest enterprises
          • 630*7 Marketing of forest products. Economics of forest transport and the wood industries
          • 630*8 Forest products and their utilization
          • 630*9 Forests and forestry from the national point of view. Social economics of forestry
        • 631/635 Farm management. Agronomy. Horticulture
          • 631 Agriculture in general
            • 631.1 Farm management and organization
            • 631.2 Farm buildings, structures and installations. Buildings for livestock, produce, machinery and equipment
            • 631.3 Agricultural machines, implements and equipment
            • 631.4 Soil science. Pedology. Soil research
            • 631.5 Agricultural operations
            • 631.6 Rural engineering
            • 631.8 Fertilizers, manures and soil enrichment. Promotion of growth. Plant stimulants
          • 632 Plant damage, injuries. Plant diseases. Pests, organisms injurious to plants. Plant protection
          • 633/635 Horticulture in general. Specific crops
            • 633 Field crops and their production
              • 633.1 Cereals. Grain crops
              • 633.2 Forage grasses. Meadow and pasture grasses
              • 633.3 Forage plants except grasses
              • 633.4 Edible roots and tubers. Root crops
              • 633.5 Textile and fibre plants
              • 633.6 Sugar and starch plants
              • 633.7 Plants yielding stimulants. Beverage plants
              • 633.8 Aromatic plants. Condiment plants. Oleaginous plants. Dye plants. Tanning plants. Medicinal plants
              • 633.9 Other plants with industrial uses
            • 634 Fruit growing
              • 634.2 Stone fruits. Drupes in general
              • 634.3 Rutaceous and moraceous fruits. Citrous fruits in general
              • 634.4 Other pulp fruits
              • 634.5 Nuts
              • 634.6 Various tropical and subtropical fruits
              • 634.7 Small fruits of shrubs and herbaceous plants. Berries
              • 634.8 Viticulture. Grape vines. Vineyards
            • 635 Garden plants. Gardening
              • 635.1/.8 Vegetables. Kitchen gardening
                • 635.1 Edible roots. Root vegetables
                • 635.2 Edible tubers and bulbs
                • 635.3 Plants with edible stalks, leaves or flowers
                • 635.4 Other green vegetables. Leaf vegetables
                • 635.6 Edible fruits and seeds. Pulses
                • 635.7 Aromatic herbs. Plants for seasoning
                • 635.8 Edible fungi
              • 635.9 Ornamentals. Decorative plants. Ornamental gardening
        • 636 Animal husbandry and breeding in general. Livestock rearing. Breeding of domestic animals
          • 636.01/.09 Special auxiliary subdivision for animal husbandry
            • 636.01 Origin, evolution and domestication of animals kept by humans. Taming of animals. Biological bases of rearing and training
            • 636.02 Animals kept for breeding, showing and scientific uses
            • 636.03 Animals bred or kept for food or other produce (productivity, yield). Farm and ranch animals in general
            • 636.04 Animals bred or kept for work and service or pleasure of humans
            • 636.05 Animals according to breeding
            • 636.06 Characteristics, constitution and special biological features of domestic animals
            • 636.08 General questions of breeding and rearing
            • 636.09 Veterinary science
          • 636.1 Domestic equines. Horses
          • 636.2 Large ruminants. Cattle, oxen
          • 636.3 Small ruminants
          • 636.4 Pigs. Swine
          • 636.5 Poultry
          • 636.6 Birds (except poultry and game) bred or kept by humans
          • 636.7 Dogs
          • 636.8 Cats
          • 636.9 Other animals kept by humans
        • 637 Produce of domestic (farmyard) animals and game
        • 638 Keeping, breeding and management of insects and other arthropods
        • 639 Hunting. Fishing. Fish breeding
          • 639.1 Hunting
          • 639.2 Fishing. Fisheries
          • 639.3 Fish breeding. Pisciculture
          • 639.4 Breeding of aquatic molluscs (shellfish)
          • 639.5 Breeding of aquatic crustaceans
          • 639.6 Other marine products
      • 64 Home economics. Domestic science. Housekeeping
        • 64.01/.08 Special auxiliary subdivision for domestic science
          • 64.01 The household. Household management
          • 64.048 Study of work and working methods in the household
          • 64.05 Home economics. Housekeeping, furnishing and equipping a home etc. for particular kinds of person
          • 64.06 Household appliances and machines. Labour-saving devices in the home
          • 64.08 Moving house. Removals
        • 640 Types of household
        • 641/642 Food. Cooking. Dishes. Meals
          • 641 Food. Cooking. Dishes
          • 642 Meals and mealtimes. Tableware
        • 643/645 The home. Household fittings and furnishings
          • 643 The home. The dwelling
          • 644 Installations for health and comfort in dwellings
            • 644.1 Indoor climate control. Heating. Ventilation. Air conditioning
            • 644.3 Domestic lighting
            • 644.6 Domestic water supply and sanitary installations
          • 645 Furniture and household fittings
        • 646/649 Personal requisites. Household management
          • 646 Clothing. Body care
            • 646.2 Making and mending of clothes at home. Domestic dressmaking
            • 646.4 Clothing. Garments
            • 646.7 Body care. Beauty care. Accessories for dressing and undressing
          • 648 Washing. Laundry. Cleaning
          • 649 Domestic care of children, invalids, guests
      • 65 Communication and transport industries. Accountancy. Business management. Public relations
        • 654 Telecommunication and telecontrol (organization, services)
          • 654.1 Telegraphy, telephony, radio, television services
          • 654.9 Signalling. Various telecommunication services. Remote control (telecontrol)
        • 655 Graphic industries. Printing. Publishing. Book trade
          • 655.1 Printing industry in general
          • 655.4 Publishing and bookselling in general
        • 656 Transport and postal services. Traffic organization and control
          • 656.1/.5 Land transport
            • 656.1 Road transport
            • 656.2 Rail transport. Rail traffic
            • 656.4 Transport by light railways
            • 656.5 Land transport by conveyor systems and pipelines
          • 656.6 Transport by water
          • 656.7 Transport by air. Air traffic
          • 656.8 Postal services and administration
        • 657 Accountancy
        • 658 Business management, administration. Commercial organization
          • 658.1 Forms of enterprise. Finances
          • 658.2 Installations and plant. Premises. Buildings, works, factories. Materials
          • 658.3 Human relations in the enterprise. Personnel management
          • 658.5 Production engineering and planning. Design. Production management and control
          • 658.6 Commercial organization and practice. Goods. Services
          • 658.7 Buying. Purchasing. Procurement. Management of stock
          • 658.8 Marketing. Sales. Selling. Distribution
          • 658.9 Other commercial activities
        • 659 Publicity. Information work. Public relations
          • 659.1 Publicity. Advertising
          • 659.2 Information work. Advisory and consultancy services
          • 659.3 Mass communication. Informing, enlightening of the public at large
          • 659.4 Public relations (PR)
      • 66 Chemical technology. Chemical and related industries
        • 66.01/.09 Special auxiliary subdivision for chemical engineering
          • 66.01 Fundamentals of chemical engineering
          • 66.02 Chemical processing operations and equipment in general
          • 66.03 Materials, characteristics, processes and equipment
          • 66.04 Heat treatment operations and equipment
          • 66.06 Chemical technology of liquids. Processes and equipment for treatment of or with liquids
          • 66.07 Chemical technology of gases
          • 66.08 Physical and physicochemical operations and equipment. Physical and physicochemical effects on chemical processes
        • 661 Chemicals
          • 661.1 Special chemical industries
          • 661.2 Production of sulphur and its derivatives
          • 661.3 Production of soda and potash, alkalis
          • 661.4 Production of halogens and halogen compounds, inorganic peroxo-compounds
          • 661.5 Production of nitrogen compounds. Fixation of nitrogen. Nitrogen industry in general
          • 661.6 Production of various nonmetals and semimetals (metalloids), and their compounds
          • 661.7 Production of organic substances. Organic chemicals
          • 661.8 Metallic compounds in general. Salts. Mineral compounds
          • 661.9 Production of gases
        • 662 Explosives. Fuels
          • 662.1/.4 Explosives
            • 662.1 Fireworks. Pyrotechnic and related devices
            • 662.2 High explosives
            • 662.3 Propellant powders. Gunpowders
            • 662.4 Initiators, primers for explosives. Detonators
          • 662.5 Igniters. Kindlers. Matches. Lighters
          • 662.6/.9 Heat economy. Fuel economy. Fuels. Heating
            • 662.6 Heat or fuel economy in general. Combustion. Natural fuels
            • 662.7 Fuel technology. Processed fuels
            • 662.8 Mechanical treatment for solidification of fuels. Briquetting
            • 662.9 Furnace and combustion engineering
        • 663 Industrial microbiology. Industrial mycology. Zymurgy, fermentation industry. Beverage industry. Stimulant industry
          • 663.1 Microbiological industries. Science and technique of applied microbiology. Applied mycology
          • 663.2 Wine. Winemaking. Oenology
          • 663.3 Cider. Perry. Other fruit wines, sap wines
          • 663.4 Beers. Brewing. Malting
          • 663.5 Potable alcohol. Spirituous liquors (ardent spirits). Alcohol distillation, refining
          • 663.6 Water for beverages and other industrial uses. Mineral waters. Medicinal waters. Edible ice
          • 663.8 Main ingredients for the blending of drinks. Fruit and vegetable juices. Syrups. Liqueurs. Soft drinks
          • 663.9 Chocolate. Cocoa. Coffee. Tea. Tobacco
        • 664 Production and preservation of solid foodstuffs
          • 664.1 Sugar. Molasses. Glucose etc.
          • 664.2 Starch. Amylaceous materials
          • 664.3 Edible oils and fats. Margarine. Protein foodstuffs
          • 664.4 Edible minerals
          • 664.5 Spices. Condiments
          • 664.6/.7 Technology and processing of cereal grains
            • 664.6 Baking. Bread. Flour confectionery
            • 664.7 Cereal technology. Flour and corn milling. Grain processing
          • 664.8/.9 Food preservation technique
        • 665 Oils. Fats. Waxes. Adhesives. Gums. Resins
          • 665.1 Generalities on oils, fats, waxes and products derived from them
          • 665.2 Oils, fats and waxes of animal origin
          • 665.3 Vegetable oils, fats, waxes, phosphatides
          • 665.5 Essential oils. Perfumery. Cosmetics
          • 665.6/.7 Processes and products of the petroleum and allied industries
            • 665.6 Mineral oil technology. Technology of petroleum and allied products
            • 665.7 Products of the mineral oil industry. Mineral oils and similar products
          • 665.9 Miscellaneous organic chemical industries
        • 666 Glass industry. Ceramics. Cement and concrete
          • 666.1 Glass industry. Glass technology. Glass manufacture in general. Glass in the comprehensive sense
          • 666.3/.7 Ceramics
            • 666.3 Ceramics in general. Ceramic raw materials
            • 666.5 Porcelain. China
            • 666.6 Stoneware. Earthenware (porous ceramic ware)
            • 666.7 Coarse ceramics. Heavy clayware. Refractories. Hard ceramic materials. Mixtures of ceramics and other materials
          • 666.9 Gypsum, lime and cement industries. Hard-setting materials. Plasters and compositions. Mortar and concrete
        • 667 Colour industries
          • 667.2 Dyestuffs industry. Manufacture and use of dyestuffs
          • 667.4 Writing inks
          • 667.5 Printing inks (black or coloured). Lithographic inks. Writing and drawing pencils. Coloured crayons
          • 667.6 Coatings and coating techniques. Paints. Varnishes. Lacquers
          • 667.7 Colouring, staining etc., of various materials (except printing and painting)
        • 669 Metallurgy
          • 669.1 Ferrous metallurgy. Iron and steel
          • 669.2 Nonferrous metals in general
      • 67 Various industries, trades and crafts
        • 671 Articles of precious metals, gems, precious stones
          • 671.1 Gold and silver articles. Articles of other precious metals. Jewellery
          • 671.4 Manufacture of coins and medals. Minting
        • 672 Articles of iron and steel in general
        • 673 Articles of nonferrous metals (except precious metals)
        • 674 Timber and woodworking industry
        • 675 Leather industry (including fur and imitation leather)
        • 676 Pulp, paper and board industry
        • 677 Textile industry
          • 677.1/.5 Textile fibres
            • 677.1/.3 Natural fibres
              • 677.1/.2 Vegetable fibres
                • 677.1 Bast fibres (fibres from dicotyledon stems). Hard fibres (fibres from monocotyledon leaves and fruit)
                • 677.2 Vegetable hairs
              • 677.3 Animal fibres
            • 677.4 Man-made fibres
            • 677.5 Mineral and metal fibres. Braiding materials. Rubber threads. Paper yarns
        • 678 Industries based on macromolecular materials. Rubber industry. Plastics industry
          • 678.4 Natural rubber. Other natural macromoleculars containing only carbon and hydrogen
          • 678.5 Plastics
          • 678.6 Synthetic polycondensation products. Polycondensates. Synthetic resins. Synthetic fibres etc.
          • 678.7 Synthetic polymerization products. Polymerizates. Synthetic rubbers
        • 679 Industries based on various processable materials
          • 679.7 Cable and cordage industries
          • 679.8 Stone technology. Stone industry
          • 679.9 Technology of other natural processable materials
      • 68 Industries, crafts and trades for finished or assembled articles
        • 681 Precision mechanisms and instruments
          • 681.1 Apparatus with wheel or motor mechanisms
          • 681.2 Instrument-making in general. Instrumentation. Measuring instruments and their manufacture. Balances. Weighing devices
          • 681.5 Automatic control technology. Smart technology
          • 681.6 Graphic reproduction machines and equipment
          • 681.7 Optical apparatus and instruments
          • 681.8 Technical acoustics
        • 682 Smithery. Blacksmithery. Farriery. Hand-forged ironwork
          • 682.1 Farriery. Shoe-smithing
          • 682.3 Toolsmithing. Edge-tool forging
          • 682.5 Furnishing ironwork
          • 682.6 Building ironwork
        • 683 Ironmongery. Hardware. Locksmithing. Bottling. Lamps. Heating appliances
        • 684 Furniture and allied industries. Furniture manufacture. Upholstery
          • 684.4 Furniture. Furniture design and manufacture
          • 684.6 Veneering. Marquetry. Inlay etc.
          • 684.7 Upholstery. Bedding. Covers. Hangings
        • 685 Saddlery. Footwear. Gloving. Travel, sports, games and other equipment
          • 685.1 Saddlery. Harness making
          • 685.2 Accoutrements. Beltmaking. Leather equipment and analogous products
          • 685.3 Footwear. Other aids to locomotion
          • 685.4 Gloving. Glovemaking
          • 685.5 Travel goods. Camping equipment
          • 685.6 Sports and games equipment. Equipment and installations for athletics, gymnastics, physical training
          • 685.7 Mountaineering, climbing equipment. Swimming equipment
          • 685.8 Equipment for board and table games
        • 686 Bookbinding. Metallizing. Mirror-making. Stationery
        • 687 Clothing industry. Garment manufacture. Beauty culture
          • 687.1 Outer clothing. Tailoring
          • 687.2 Linen wear. Lingerie
          • 687.3 Knitwear. Ties. Devices for securing and protecting clothing
          • 687.4 Headgear. Hatmaking. Millinery
          • 687.5 Beauty culture industries
          • 687.8 Artificial furriery
          • 687.9 Brush industry. Brooms etc.
        • 688 Fancy goods. Toys. Decorative articles
          • 688.7 Toys. Articles for amusement, tricks. Decorations
        • 689 Amateur handicrafts. Technical hobbies
      • 69 Building (construction) trade. Building materials. Building practice and procedure
        • 691 Building materials. Building components
        • 692 Structural parts and elements of buildings
        • 693 Masonry and related building crafts
        • 694 Timber construction. Carpentry. Joinery
        • 696 Equipment, services, installations in buildings (sanitary, gas, steam, electrical). Pipe fitter. Plumber. Metal worker. Drainlayer. Electrician. Other trades
        • 697 Heating, ventilation and air conditioning of buildings
        • 698 Finishing and decorating trades
    • 7 THE ARTS. RECREATION. ENTERTAINMENT. SPORT
      • 7.01/.09 Special auxiliary subdivision for the arts
        • 7.01 Theory and philosophy of art. Principles of design, proportion, optical effect
        • 7.02 Art technique. Craftsmanship
        • 7.03 Artistic periods and phases. Schools, styles, influences
          • 7.031 Prehistoric art. Primitive art (ancient and modern)
          • 7.032 Art of the ancient cultures of the Old World. Styles of Antiquity
          • 7.033 Mediaeval art (Christian, Islamic art)
          • 7.034 Renaissance. Baroque. Rococo. Colonial
          • 7.035 Post-Renaissance
          • 7.036 Modern art movements (from late 19th century). Realism, impressionism and subsequent 20th century trends
          • 7.037 Transition between Expressionism and abstract art
          • 7.038 Abstract art. Non-figurative art
        • 7.04 Subjects for artistic representation. Iconography. Iconology. Details and finishes. Decoration. Ornament
        • 7.05 Applications of art (in industry, trade, the home, everyday life)
        • 7.06 Various questions concerning art
        • 7.07 Occupations and activities associated with the arts and entertainment
        • 7.08 Characteristic features, forms, combinations etc. (in art, entertainment and sport)
        • 7.091 Performance, presentation (in original medium)
      • 71 Physical planning. Regional, town and country planning. Landscapes, parks, gardens
        • 711 Principles and practice of physical planning. Regional, town and country planning
        • 712 Planning of landscape (natural and designed). Parks. Gardens
        • 718 Cemeteries. Graveyards. Crematoriums. Other places for disposal of the dead (planning, design, upkeep etc.)
        • 719 Preservation of rural and urban amenities generally
      • 72 Architecture
        • 72.01/.05 Special auxiliary subdivision for architecture
          • 72.01 Theory and philosophy of architecture. Principles of design, proportion, optical effect
          • 72.02 Technique
          • 72.03 Periods and phases of architecture. Schools, styles, influences
          • 72.04 Architectural details and finishes. Decoration. Ornament
          • 72.05 Parts, spaces and rooms planned for specific uses
        • 721 Buildings generally
        • 725 Public, civil, commercial, industrial buildings. Secular architecture generally
        • 726 Religious, ecclesiastical architecture. Sacred and funerary buildings
        • 727 Buildings for educational, scientific, cultural purposes
        • 728 Domestic architecture. Housing. Residential buildings
      • 73 Plastic arts
        • 730 Sculpture in general. Statuary
        • 736 Glyptics. Sigillography
        • 737 Numismatics
        • 738 Ceramic arts. Pottery
          • 738.1 Porcelain
          • 738.2 Glazed earthenware
          • 738.3 Stoneware
          • 738.4 Enamel (vitreous enamel). Cloisonné. Enamel ornaments
          • 738.5 Mosaics
          • 738.6 Terracotta
          • 738.8 Various ceramic objects
        • 739 Metal arts
          • 739.1 Goldsmith's and silversmith's art
          • 739.2 Jewellery (metalworking aspects)
      • 74 Drawing. Design. Applied arts and crafts
        • 741/744 Drawing
          • 741 Drawing in general
            • 741.5 Caricature. Cartoons. Satirical and humorous drawings
            • 741.7 Silhouettes. Scissor-cuts
            • 741.9 Collections of drawings. Sketchbooks
          • 742 Perspective in drawing
          • 744 Linear and geometric drawing. Technical drawing
        • 745/749 Industrial and domestic arts and crafts. Applied arts
          • 745 Decorative handicrafts
          • 746 Fancy work. Art needlework
          • 747 Interior decoration
          • 748 Vitreous arts. Artistic glassware and crystal ware
          • 749 Artistic furniture, heating and lighting devices
      • 75 Painting
      • 76 Graphic art, printmaking. Graphics
        • 761 Relief techniques
        • 762 Intaglio techniques
        • 763 Planographic techniques. Lithography (autolithography)
        • 766 Applied graphic arts. Commercial graphics
      • 77 Photography and similar processes
        • 77.01/.09 Special auxiliary subdivision for photography
          • 77.01 Theory, principles and nature of photographic phenomena
          • 77.02 Photographic operations
          • 77.03/.08 Kinds of photography and photograph
            • 77.03 Documentary photography. Photographic records and their interpretation
            • 77.04 Pictorial, artistic photography. Photographs according to subject
            • 77.05 Photography and exposures according to ambient conditions
            • 77.06 Photographs, pictures or prints according to appearance, form or size
            • 77.07 Photographs according to support or base material
            • 77.08 Photographs according to intermediate stages
        • 771 Photographic equipment, apparatus and materials
        • 772 Photographic systems, processes (especially those using inorganic substances or physical phenomena)
        • 774 Photomechanical processes generally
        • 776 Photolithography. Photographic production of planographic plates
        • 777 Intaglio and relief processes. Photogravure. Letterpress or relief plates (line and halftone blocks)
        • 778 Special applications and techniques of photography
      • 78 Music
        • 78.01 Theory and philosophy of music
        • 78.02 Composition of musical works
        • 78.03 Periods and phases in the history of music. Musical schools, styles and influences
        • 78.04 Subjects for musical representation. Programme music. Illustrative, descriptive or representational music
        • 78.05 Applications of music in industry and trade, the home and everyday life
        • 78.06 Various questions concerning music
        • 78.07 Occupations and activities associated with music
        • 78.08 Characteristics, kinds of musical works. Musical forms
        • 78.09 Types of performance or presentation
        • 780.6 Musical instruments and accessories
        • 780.7 Music teaching aids. Other music accessories
        • 781.1 Scientific theories of music. Mathematical, physical, physiological, psychological bases. Musical acoustics
        • 781.2 General theory of music
        • 781.4 Harmony. Counterpoint. Melody
        • 781.6 General questions of composition and interpretation
        • 781.7 Theories and forms of national music (of various countries or peoples)
        • 781.8 Theories and forms of the music of antiquity
        • 782/785 Kinds of music
          • 782 Dramatic music. Opera
          • 783 Church music. Sacred music. Religious music
          • 784 Vocal music
            • 784.1 A cappella music. Unaccompanied vocal music. Rounds
            • 784.2 Vocal extracts from larger works
            • 784.3 Vocal chamber music
            • 784.4 Popular, traditional, historic vocal music
            • 784.5 Secular oratorios and cantatas
            • 784.6 Community songs. Children's songs
            • 784.7 Other kinds of song
          • 785 Instrumental music. Symphonic music. Grouping of instruments. Ensemble music
            • 785.1 Ensemble music for relatively large numbers of instruments
            • 785.7 Chamber music. Music for several instruments concertante
      • 79 Recreation. Entertainment. Games. Sport
        • 791 Cinema. Films (motion pictures)
          • 791-2/-5 Special auxiliary subdivision for cinema, films
            • 791-2 Films according to characteristics of presentation
            • 791-5 Character types
          • 791.1 Principal stages of cinema development
          • 791.2 Genre, subject, style of film
          • 791.3 Aesthetics and film
          • 791.4 Society and film
          • 791.5 Education and film
          • 791.6 Film as industry
        • 792 Theatre. Stagecraft. Dramatic performances
          • 792.2 Spoken drama. Plays
          • 792.5 Musical productions
          • 792.7 Variety. Vaudeville. Music hall. Cabaret. Revues. Pantomimes
          • 792.8 Presentations of art of movement. Choreography
          • 792.9 Special kinds of theatre
        • 793 Social entertainments and recreations. Art of movement. Dance
          • 793.2 Particular social recreations, requiring preparations
          • 793.3 Art of movement. Dance
          • 793.5/.7 Parlour games. Party games
            • 793.5 Games involving forfeits
            • 793.7 Games not characterized by action
          • 793.8 Scientific recreations. Conjuring. Sleight of hand. Illusionism. Magic tricks
        • 794 Board and table games (of thought, skill and chance)
          • 794.1 Chess
          • 794.2 Minor board games not dependent on chance
          • 794.3 Table games with pieces or counters and an element of chance
          • 794.4 Card games
          • 794.5 Pattern games or puzzles requiring patience or dexterity
          • 794.8 Minor aiming games. Children's miniature games
          • 794.9 Games of pure chance
        • 796 Sport. Games. Physical exercises
          • 796.01/.09 Special auxiliary subdivision for sport, games, physical exercise
            • 796.01 Sport philosophy, theory, purpose, methodology, ethics and aesthetics
            • 796.02 Technical matters. Practice and exercise facilities. Sports gear, equipment. Materials. Protection against accidents, hazards
            • 796.03 Sports movement. Sports activity from various points of view
            • 796.05 Manner of contest. Combative style. Strategy. Tactics
            • 796.06 Organization of sport, in general
            • 796.07 Kind of participation in sport
            • 796.08 Participation (number of players), combinations etc.
            • 796.09 Contests. Records
          • 796.1 Outdoor games and recreation
          • 796.2 Games of motion and skill with special equipment
          • 796.3 Ball games
            • 796.32 High ball games with large ball
            • 796.33 Ball games in which the ball is played with foot and hand
            • 796.35 Low ball games with striking implement
          • 796.4 Gymnastics. Acrobatics. Athletics
          • 796.5 Touring. Walking. Mountaineering. Orientation sports. Camping
          • 796.6 Wheel sports. Cycling. Roller sports
          • 796.7 Motoring. Motorcycling
          • 796.8 Combat sports. Self-defence sports. Heavy athletics. Trials of strength
          • 796.9 Winter sports. Ice games. Skiing. Sledging
        • 797 Water sports. Aerial sports
          • 797.1 Watercraft sports. Boating
          • 797.2 Swimming. Diving. Aquatic games
          • 797.5 Aerial sports
        • 798 Riding and driving. Horse and other animal sports
          • 798.2 Riding
          • 798.4 Horse racing. Mounted racing
          • 798.6 Driving with horses. Coaching, carriage-driving. Trotting
          • 798.8 Canine sports. Dog racing etc.
          • 798.9 Other animal contests, e.g. with birds
        • 799 Sport fishing. Sport hunting. Shooting and target sports
    • 8 LANGUAGE. LINGUISTICS. LITERATURE
      • 80 General questions relating to both linguistics and literature. Philology
        • 801 Prosody. Auxiliary sciences and sources of philology
          • 801.6 Prosody: metre, rhythm, rhyme and verse pattern
          • 801.7 Auxiliary sciences and studies of philology
          • 801.8 Sources of linguistics and philology. Collections of texts
        • 808 Rhetoric. The effective use of language
          • 808.1 Authorship. Literary activity and technique
          • 808.2 Editing. Adapting and arranging copy for publication
          • 808.5 Rhetoric of speech. Art or technique of oral expression
      • 81 Linguistics and languages
        • 81-11 Schools and trends in linguistics
          • 81-112
          • 81-114
          • 81-116
        • 81-13 Methodology of linguistics. Methods and means
        • 81`01/`08 Special auxiliary numbers for origins and periods of languages
          • 81`01 Old period. Archaic period
          • 81`02 Classical period
          • 81`04 Middle period
          • 81`06 Modern period
          • 81`08 Revived language
        • 81`1/`4 Special auxiliary subdivision for subject fields and facets of linguistics and languages
          • 81`1 General linguistics
          • 81`2 Theory of signs. Theory of translation. Standardization. Usage. Geographical linguistics
            • 81`22 General theory of signs in relation to linguistics. Semiology. Semiotics
            • 81`23 Psycholinguistics. Psychology of language
            • 81`24 Practical knowledge of languages
            • 81`25 Theory of translation
            • 81`26 Language planning. Control of language. Standardization of language
            • 81`27 Sociolinguistics. Usage of language
            • 81`28 Dialectology. Geographical linguistics. Areal linguistics
          • 81`3 Mathematical and applied linguistics. Phonetics. Graphemics. Grammar. Semantics. Stylistics
            • 81`32 Mathematical linguistics
            • 81`33 Applied linguistics
            • 81`34 Phonetics. Phonology
            • 81`35 Graphemics. Orthography. Spelling
            • 81`36 Grammar
            • 81`37 Semantics
            • 81`38 General stylistics
          • 81`4 Text linguistics, Discourse analysis. Typological linguistics
            • 81`42 Text linguistics. Discourse analysis
            • 81`44 Typological linguistics
        • 811 Languages
          • 811.1/.9 All languages natural or artificial
            • 811.1/.8 Individual natural languages
              • 811.1/.2 Indo-European languages
                • 811.11 Germanic languages
                  • 811.111 English language
                  • 811.112 West Germanic languages (other than English)
                    • 811.112.2 German language (High German, Standard written German)
                    • 811.112.5 Dutch language
                  • 811.113 North Germanic (Nordic) languages
                    • 811.113.4 Danish language
                    • 811.113.5 Norwegian language
                    • 811.113.6 Swedish language
                • 811.12 Italic languages
                  • 811.124 Latin language
                • 811.13 Romance / Romanic languages
                  • 811.131 Italo-Romance / Italo-Romanic languages
                    • 811.131.1 Italian language
                  • 811.133 Gallo-Romance / Gallo-Romanic languages
                    • 811.133.1 French language
                  • 811.134 Ibero-Romance / Ibero-Romanic languages
                    • 811.134.1 Catalan language
                    • 811.134.2 Spanish language
                    • 811.134.3 Portuguese language
                  • 811.135 Balkan Romance / Balkan Romanic languages
                    • 811.135.1 Romanian language
                • 811.14 Greek (Hellenic) language
                • 811.16 Slavic / Slavonic languages
                  • 811.161 East Slavic / Slavonic languages
                    • 811.161.1 Russian language
                    • 811.161.2 Ukrainian language
                    • 811.161.3 Belarusian language
                  • 811.162 West Slavic / Slavonic languages
                    • 811.162.1 Polish language
                    • 811.162.3 Czech language
                    • 811.162.4 Slovak language
                  • 811.163 South Slavic / Slavonic languages
                    • 811.163.2 Bulgarian language
                    • 811.163.3 Macedonian language
                    • 811.163.4 Serbian and Croatian languages
                      • 811.163.41 Serbian language
                      • 811.163.42 Croatian language
                    • 811.163.6 Slovenian / Slovene language
                • 811.17 Baltic languages
                  • 811.172 Lithuanian language
                  • 811.174 Latvian / Lettish language
                • 811.18 Albanian language
                • 811.19 Armenian language
                • 811.21/.22 Indo-Iranian languages
                  • 811.21 Indic languages
                    • 811.214 Modern Indic languages
                      • 811.214.2 Central Modern Indic languages
                        • 811.214.21 Hindi language
                      • 811.214.3 Eastern Modern Indic languages
                        • 811.214.32 Bengali (Bangla) language
              • 811.3 Dead languages of unknown affiliation. Caucasian languages
                • 811.34 Dead languages of unknown affiliation, spoken in the Mediterranean and Near East (except Semitic)
                • 811.35 Caucasian languages
                  • 811.353 Southern (Kartvelian) group
                    • 811.353.1 Georgian language
              • 811.4 Afro-Asiatic, Nilo-Saharan, Congo-Kordofanian, Khoisan languages
              • 811.5 Ural-Altaic, Palaeo-Siberian, Eskimo-Aleut, Dravidian and Sino-Tibetan languages. Japanese. Korean. Ainu
                • 811.51 Ural-Altaic languages
                  • 811.511 Uralic languages
                    • 811.511.1 Finno-Ugric languages
                      • 811.511.11 Finnic languages
                        • 811.511.111 Finnish language
                        • 811.511.113 Estonian language
                      • 811.511.14 Ugric languages
                        • 811.511.141 Hungarian language
                • 811.521 Japanese language
                • 811.58 Sino-Tibetan languages
                  • 811.581 Chinese languages
              • 811.6 Austro-Asiatic languages. Austronesian languages
              • 811.7 Indo-Pacific (non-Austronesian) languages. Australian languages
              • 811.8 American indigenous languages
            • 811.9 Artificial languages
              • 811.92 Artificial languages for use among human beings. International auxiliary languages (interlanguages)
                • 811.922 Esperanto language
      • 82 Literature
        • 82-1/-9 Special auxiliary subdivision for literary forms, genres
          • 82-1 Poetry. Poems. Verse
          • 82-2 Drama. Plays
          • 82-3 Fiction. Prose narrative
            • 82-31 Novels. Full-length stories
            • 82-32 Short stories. Novellas
          • 82-4 Essays
          • 82-5 Oratory. Speeches
          • 82-6 Letters. Art of letter-writing. Correspondence. Genuine letters. Other works in epistolary form
          • 82-7 Prose satire. Humour, epigram, parody etc.
          • 82-8 Miscellanea. Polygraphies. Selections
          • 82-9 Various other literary forms
            • 82-92 Periodical literature. Writings in serials, journals, reviews. Journalism. Occasional literature. Polemic, political writings. Pamphleteering
            • 82-94 History as literary genre. Historical writing. Historiography. Chronicles. Annals. Memoirs. Journals. Diaries. Biography. Autobiography
        • 82.02/.09 Special auxiliary subdivision for theory, study and technique of literature
          • 82.02 Literary schools, trends and movements
          • 82.09 Literary criticism. Literary studies
            • 82.091 Comparative literary studies. Comparative literature
        • 821 Literatures of individual languages and language families
          • 821.1/.2 Indo-European literature
            • 821.11 Literature of Germanic languages
              • 821.111 English literature
              • 821.112 West Germanic literatures (other than English)
                • 821.112.2 German literature
                • 821.112.5 Dutch literature
              • 821.113 North Germanic, Nordic (Scandinavian) literatures
                • 821.113.4 Danish literature
                • 821.113.5 Norwegian literature
                • 821.113.6 Swedish literature
            • 821.12 Literature of Italic languages
              • 821.124 Latin literature
            • 821.13 Literature of Romance (Romanic) languages
              • 821.131 Literature of Italo-Romance / Italo-Romanic languages
                • 821.131.1 Italian literature
              • 821.133 Literature of Gallo-Romance / Gallo-Romanic languages
                • 821.133.1 French literature
              • 821.134 Literature of Ibero-Romance / Ibero-Romanic) languages
                • 821.134.1 Catalan literature
                • 821.134.2 Spanish literature
                • 821.134.3 Portuguese literature
              • 821.135 Literature of Balkan Romance / Romanic languages
                • 821.135.1 Romanian literature
            • 821.14 Greek (Hellenic) literature
            • 821.16 Literature of Slavic (Slavonic) languages
              • 821.161 East Slavic / Slavonic literature
                • 821.161.1 Russian literature
                • 821.161.2 Ukrainian literature
                • 821.161.3 Belarusian literature
              • 821.162 West Slavic / Slavonic literatures
                • 821.162.1 Polish literature
                • 821.162.3 Czech literature
                • 821.162.4 Slovakian literature
              • 821.163 South Slavic / Slavonic literatures
                • 821.163.2 Bulgarian literature
                • 821.163.3 Macedonian literature
                • 821.163.4 Serbian literature. Croatian literature
                  • 821.163.41 Serbian literature
                  • 821.163.42 Croatian literature
                • 821.163.6 Slovenian literature
            • 821.17 Literature of Baltic languages
              • 821.172 Lithuanian literature
              • 821.174 Latvian literature
            • 821.18 Albanian literature
            • 821.19 Armenian literature
            • 821.21/.22 Literature of Indo-Iranian languages
              • 821.21 Indic literatures
                • 821.214 Literature of modern Indic languages
                  • 821.214.21 Hindi literature
                  • 821.214.32 Bengali (Bangla) literature
          • 821.3 Literature of Caucasian languages. Literature of dead languages of unknown affiliation
            • 821.353 South Caucasian (Kartvelian) literature
              • 821.353.1 Georgian literature
          • 821.4 Literature of Afro-Asiatic, Nilo-Saharan, Congo-Kordofanian, Khoisan languages
          • 821.5 Literature of Ural-Altaic, Japanese, Korean, Ainu, Palaeo-Siberian, Eskimo-Aleut, Dravidian languages, Sino-Tibetan languages
            • 821.51 Literature of Ural-Altaic languages
              • 821.511 Literature of Uralic languages
                • 821.511.1 Literature of Finno-Ugric languages
                  • 821.511.11 Literature of Finnic languages
                    • 821.511.111 Finnish literature
                    • 821.511.113 Estonian literature
                  • 821.511.14 Literature of Ugric languages
                    • 821.511.141 Hungarian literature
            • 821.521 Japanese literature
            • 821.58 Literature of Sino-Tibetan languages
              • 821.581 Chinese literature
          • 821.6 Literature of Austro-Asiatic languages. Austronesian literature
          • 821.7 Literature of Indo-Pacific (non-Austronesian) languages. Australian (Aboriginal) literature
          • 821.8 Literature of American indigenous languages (Amerindian literatures)
          • 821.9 Literature in artificial languages
    • 9 GEOGRAPHY. BIOGRAPHY. HISTORY
      • 902/908 Archaeology. Prehistory. Cultural remains. Area studies
        • 902 Archaeology
        • 903 Prehistory. Prehistoric remains, artefacts, antiquities
        • 904 Cultural remains of historical times
        • 908 Area studies. Study of a locality
      • 91 Geography. Exploration of the Earth and of individual countries. Travel. Regional geography
        • 910 General questions. Geography as a science. Exploration. Travel
          • 910.1 Science of geography. Methodology (theory, systems, methods)
          • 910.2 Kinds and techniques of geographical exploration
          • 910.3 Exploration of particular geographical features
          • 910.4 Voyages of discovery
        • 911 General geography. Science of geographical factors (systematic geography). Theoretical geography
          • 911.2 Physical geography
          • 911.3 Human geography (cultural geography). Geography of cultural factors
          • 911.5/.9 Theoretical geography
            • 911.5 Typological geography
            • 911.6 Individual spatial divisions and regional units
            • 911.7 Comparative geography
            • 911.8 Normative geography
            • 911.9 Applied, practical geography
        • 912 Nonliterary, nontextual representations of a region
        • 913 Regional geography
      • 92 Biographical studies. Genealogy. Heraldry. Flags
        • 929 Biographical studies
        • 929.5 Genealogy
        • 929.6 Heraldry
        • 929.7 Nobility. Titles. Peerage
        • 929.9 Flags. Standards. Banners
      • 93/94 History
        • 930 Science of history. Historiography
          • 930.1 History as a science
          • 930.2 Methodology of history. Ancillary historical sciences
            • 930.25 Archivistics. Archives (including public and other records)
          • 930.85 History of civilization. Cultural history
        • 94 General history