| 00 | Prolegomena. Fundamentals of knowledge and culture. Propaedeutics |
| 01 | Bibliography and bibliographies. Catalogues |
| 02 | Librarianship |
| 030 | General reference works (as subject) |
| 050 | Serial publications, periodicals (as subject) |
| 06 | Organizations of a general nature |
| 070 | Newspapers. The Press. Journalism |
| 08 | Polygraphies. Collective works |
| 09 | Manuscripts. Rare and remarkable works |
