| 001 | Science and knowledge in general. |
| 001(479.25) | Science and knowledge in Armenia |
| 001.18 | Future of knowledge Future science Prediction. Forecasting. Futurology |
| 001.8 | Methodology |
| 001.89 | Organization of science and scientific work |
| 001.894 | Inventions |
| 001.895 | Innovations |
| 001.94 | Natural phenomena Mysterious phenomena and wonders of nature |
| 002 | Documentation. Books. Writings. Authorship |
| 002(479.25) | Armenian printing |
| 002.2 | Books |
| 002(479.25)(09) | History of the Armenian book |
| 002.6 | Scientific and technical information |
| 003 | History of writing. Writing systems and scripts. Alphabet |
| 003(479.25) |
| 004 | Computer science and technology. Computing. Data processing |
| 005 |
| 006 |
| 007 | Activity and organizing. Communication and control theory generally (cybernetics). ‘Human engineering’ |
| 008 | Civilization. Culture. Progress |
| 008(479.25) |
| 01 | Bibliography and bibliographies. Catalogues |
| 01(075) |
| 01(09) |
| 01(479.25) |
| 011 | Universal and general bibliographies |
| 012 | Author bibliographies. Individual bibliographies |
| 013 013:0/9 | Collective bibliographies |
| 014 | Bibliographies of works of particular characteristics |
| 015 | National bibliography . Local and regional bibliographies. |
| 016:0/9 | Special subject bibliographies |
| 016:001 |
| 016:002 |
| 016:01 | Bibliographies of general bibliographies |
| 016:02 |
| 016:05/07 |
| 016:087.5 |
| 016:091 |
| 016:1 |
| 016:2 |
| 016:3К |
| 016:3 |
| 016:338 |
| 016:34 |
| 016:34(05) |
| 016:355 |
| 016:37 |
| 016:4 |
| 016:5 |
| 016:51 |
| 016:52 |
| 016:53 |
| 016:54 |
| 016:55 |
| 016:6/62 |
| 016:61 |
| 016:63 |
| 016:7 |
| 016:796 |
| 016:8 |
| 016:821.161.1 |
| 016:821.19 |
| 016:94 |
| 016:902.5 |
| 016:902.6 |
| 016:902.7 |
| 016:91 |
| 016:929 |
| 017 | General subject catalogs. |
| 017.1 | Public library catalogs |
| 017.3 |
| 017.4 |
| 017.4(479.25) |
| 017.43 |
| 018 | Name catalogues. Author catalogues. Alphabetic catalogues of persons and places. Catchword catalogues |
| 02 | Library science |
| 02(03) |
| 02(075/077) |
| 02(09) |
| 021 | Function, value, utility, creation, development of libraries |
| 021(470+571) |
| 021(479.25) |
| 022 | Library site, building, premises. Equipment |
| 023 | Library administration. Staff. Personnel |
| 023.5 |
| 024 | Relations with the public. Regulations for library use |
| 024.6 |
| 025 | Administrative departments of libraries Acquisition and accessioning. Cataloguing. Classification and indexing. Reference work. Loans etc. |
| 025.2 |
| 025.3 |
| 025.342 |
| 025.343.2 |
| 025.4 | Library and bibliographic classification (LBC) |
| 025.45 | Universal decimal classification |
| 025.6 | Libraries for special classes of user |
| 025.7/9 |
| 026 | Special libraries |
| 027 | General libraries |
| 027.021 |
| 027.1 |
| 027.2 |
| 027.5 |
| 027.5(479.25) |
| 027.52 |
| 027.53 |
| 027.625 |
| 027.7 |
| 027.8 |
| 028 |
| 028.5 |
| 03 | Encyclopaedias, dictionaries, lexicons, glossaries |
| 03/08 |
| 05/07 | Serial publications, periodicals |
| 05 | General serial publications Serial publications, periodicals |
| 058 |
| 058(479.25) |
| 059 | Yearbooks. Directories, address books. Almanacs. Calendars. |
| 06 | Organizations of a general nature |
| 061 | Organizations and other types of cooperation Associations, foundations, societies |
| 061.068 |
| 061.12(479.25) |
| 061.2 |
| 061.213 |
| 061.213 |
| 061.213 |
| 061.236.61 |
| 061.3 |
| 061.4 |
| 061.6 |
| 069 | Museums. Permanent exhibitions |
| 069.4 |
| 069.53 |
| 070 | Newspapers. The Press. Journalism |
| 070(470+571) |
| 070(479.25) |
| 070.13 տես նաև՝ 351.751.5 | Freedom of the press. Censorship |
| 070.4 | Editorial and publishing work. Staff. Editorial departments. Types of newspaper materials |
| 070.42 |
| 08 | Polygraphies. Collective works |
| 082 | Collective works |
| 087.1:0/9 | Popular literature |
| 087.5 | Publications for children and youth Popular literature for children and youth |
| 09 | Manuscripts. Rare and remarkable works |
| 090.1 | Bibliography. Bibliomania. Rare book trade |
| 091 | Manuscripts |
| 091(479.25) |
| 093 | Incunabula |
| 094 | Other precious, remarkable or rare printed works |
| 097 | Exlibris Bookplates Monograms, seals Marks of ownership or origin |
