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Universal Decimal Classification (40917)
- Science and knowledge. Organization. Computer science. Information. Documentation. Librarianship. Institutions. Publications (40917)
  - 00 Prolegomena. Fundamentals of knowledge and culture. Propaedeutics (10022)
    - 001 Science and knowledge in general. Organization of intellectual work (2810)
      - 001.1 Concepts of science and knowledge (190)
        001.18 Future of knowledge (73)
      - 001.32 Learned, scientific societies. Academies (570)
      - 001.8 Methodology (1438)
        001.89 Organization of science and scientific work (1054)
      - 001.9 Dissemination of ideas (849)
    - 004 Computer science and technology. Computing. Data processing (8297)
      - 004.01/.08 Special auxiliary subdivision for computing (429)
        004.01 Documentation (12)
        004.02 Problem-solving methods (19)
        004.03 System types and characteristics (16)
        004.04 Processing orientation (23)
        004.05 System and software quality (20)
        004.08 Input, output and storage media (15)
      - 004.2 Computer architecture (23)
        004.22 Data representation (12)
        004.25 Memory system (2)
      - 004.3 Computer hardware (33)
        004.32 Computer pathways (3)
        004.35 Peripherals. Input-output units (3)
        004.38 Computers. Kinds of computer (7)
        004.3`1/`2 Special auxiliary numbers for hardware (1)
        004.3`2 Computer installations (1)
      - 004.4 Software (480)
        004.41 Software engineering (28)
        004.42 Computer programming. Computer programs (32)
        004.43 Computer languages (27)
        004.45 System software (35)
        004.49 Computer infections (37)
        004.4`2/`6 Special auxiliary numbers for software (9)
        004.4`2 Software development tools (4)
        004.4`4 Programming language translation (1)
        004.4`6 Runtime environment (1)
      - 004.5 Human-computer interaction. Man-machine interface. User interface. User environment (651)
        004.51 Display interface (1)
        004.55 Hypermedia. Hypertext (4)
        004.58 User help (37)
      - 004.7 Computer communication. Computer networks (1794)
        004.71 Computer communication hardware (2)
        004.72 Network architecture (2)
        004.73 Networks according to area covered (133)
        004.738 Network interconnection. Internetworking (119)
        004.75 Distributed processing systems (23)
        004.77 General networking applications and services (734)
        004.78 Online computing systems for specific use (43)
      - 004.9 Application-oriented computer-based techniques (5613)
        004.91 Document processing and production (86)
        004.92 Computer graphics (64)
        004.93 Pattern information processing (23)
        004.94 Simulation (442)
  - 02 Librarianship (814)
  - 1 Philosophy. Psychology (8193)
  - 2 Religion. Theology (107)
  - 3 Social Sciences (36696)
    - 303 Methods of the social sciences (392)
    - 304 Social questions. Social practice. Cultural practice. Way of life (Lebensweise) (2357)
    - 305 Gender studies (86)
    - 308 Соціографія. Описове вивчення суспільства (кількісне та якісне) (131)
    - 311 Statistics as a science. Statistical theory (28)
    - 314/316 Society (1341)
      - 314 Demography. Population studies (29)
        314.1 Population (15)
      - 316 Соціологія (409)
    - 32 Politics (347)
    - 33 Economics. Economic science (826)
    - 34 Law. Jurisprudence (289)
    - 35 Public administration. Government. Military affairs (511)
      - 351 Particular activities of public administration (37)
      - 352/354 Levels of administration. Local, regional, central administration (12)
      - 355/359 Military affairs. Art of war. Military science. Defence. Armed forces (148)
    - 36 Safeguarding the mental and material necessities of life (655)
    - 37 Education (34556)
      - 37.01/.09 Special auxiliary table for theory, principles, methods and organization of education (22625)
        37.01 Fundamentals of education. Theory. Policy etc. (3704)
        37.02 General questions of didactics and method (6704)
        37.04 Education in relation to the educand, pupil. Guidance (1600)
        37.06 Social problems. Human contacts, relationships (677)
        37.07 Management aspects of educational institutions (1463)
        37.09 Organization of instruction (7384)
      - 373 Kinds of school providing general education (12880)
      - 374 Education and training out of school. Further education (2541)
      - 376 Education, teaching, training of special groups of persons. Special schools (3377)
        376.3 Виховання та освіта осіб із вадами зору, слуху, мови та нервовими захворюваннями. (263)
        376.5 Виховання та освіта обдарованих дітей, вундеркіндів. (57)
      - 377 Specialized instruction. Vocational, technical, professional training. Vocational colleges, institutes. Polytechnics (5020)
      - 378 Higher education. Universities. Academic study (8134)
      - 379.8 Leisure (188)
    - 39 Cultural anthropology. Ethnography. Customs. Manners. Traditions. Way of life (217)
  - 5 Мathematics. natural sciences (3129)
    - 502/504 Environmental science. Conservation of natural resources. Threats to the environment and protection against them (616)
    - 51 Mathematics (675)
    - 52 Astronomy. Astrophysics. Space research. Geodesy (65)
    - 53 Physics (866)
    - 54 Chemistry. Crystallography. Mineralogy (288)
    - 55 Earth Sciences. Geological sciences (39)
    - 56 Palaeontology (1)
    - 57 Biological sciences in general (269)
    - 58 Botany (1)
  - 6 Applied Sciences. Medicine. Technology (1334)
    - 60 Biotechnology (6)
    - 61 Medical sciences (429)
    - 62 Engineering. Technology in general (198)
    - 63 Agriculture and related sciences and techniques. Forestry. Farming. Wildlife exploitation (56)
    - 64 Home economics. Domestic science. Housekeeping (30)
    - 65 Communication and transport industries. Accountancy. Business management. Public relations (185)
    - 66 Chemical technology. Chemical and related industries (9)
    - 67 Various industries, trades and crafts (29)
    - 68 Industries, crafts and trades for finished or assembled articles (52)
    - 69 Building (construction) trade. Building materials. Building practice and procedure (228)
  - 7 The Arts. Recreation. Entertainment. Sport. (692)
  - 8 Language. Linguistics. Literature (2811)
    - 80 General questions relating to both linguistics and literature. Philology (344)
    - 81 Linguistics and languages (1668)
    - 82 Literature (850)
  - 9 Geography. Biography. History (2202)
    - 902/908 Archaeology. Prehistory. Cultural remains. Area studies (38)
    - 91 Geography. Exploration of the Earth and of individual countries. Travel. Regional geography (267)
    - 92 Biographical studies. Genealogy. Heraldry. Flags (751)
    - 93/94 History (1188)