Main Categories List
- 000 Generalities
- 001 Knowledge
- 002 The book
- 003 Systems
- 004 [Data processing]?, Computer science
- 005 Computer programming, programs, data
- 006 Special computer methods
- 007
- 008
- 009
- 010 Bibliography?
- 011 Bibliographies
- 012 Bibliographies of individuals
- 013 Bibliographies of works by specific classes of authors
- 014 Bibliographies of anonymous and pseudonymous works
- 015 Bibliographies of works from specific places
- 016 Bibliographies of works from specific subjects
- 017 General subject catalogs
- 018 Catalogs arranged by author & date
- 019 Dictionary catalogs
- 020 [[Library & information sciences]]
- 021 Library relationships
- 022 Administration of the physical plant
- 023 Personnel administration
- 025 Library operations
- 026 Libraries for specific subjects
- 027 General libraries
- 028 Reading, use of other information media
- 029
- 030 General encyclopedic works
- 031 General encyclopedic works -- American
- 032 General encyclopedic works in English
- 033 General encyclopedic works in other Germanic languages
- 034 General encyclopedic works in French, Provencal, Catalan
- 035 General encyclopedic works in Italian, Romanian, Rhaeto-Romanic
- 036 General encyclopedic works in Spanish & Portuguese
- 037 General encyclopedic works in Slavic languages
- 038 General encyclopedic works in Scandinavian languages
- 039 General encyclopedic works in other languages
- 040
- 041
- 042
- 043
- 044
- 045
- 046
- 047
- 048
- 049
- 050 General serials & their indexes
- 051 General serials & their indexes American
- 052 General serials & their indexes In English
- 053 General serials & their indexes In other Germanic languages
- 054 General serials & their indexes In French, Provencal, Catalan
- 055 General serials & their indexes In Italian, Romanian, Rhaeto-Romanic
- 056 General serials & their indexes In Spanish & Portuguese
- 057 General serials & their indexes In Slavic languages
- 058 General serials & their indexes In Scandinavian languages
- 059 General serials & their indexes In other languages
- 060 General organization & museology
- 061 General organization & museology In North America
- 062 General organization & museology In British Isles In England
- 063 General organization & museology In central Europe In Germany
- 064 General organization & museology In France & Monaco
- 065 General organization & museology In Italy & adjacent territories
- 066 General organization & museology In Iberian Peninsula & adjacent islands
- 067 General organization & museology In eastern Europe In Soviet Union
- 068 General organization & museology In other areas
- 069 Museology? (Museum science)
- 070 [News media]?, journalism, publishing?
- 071 News media, journalism, publishing In North America
- 072 News media, journalism, publishing In British Isles In England
- 073 News media, journalism, publishing In central Europe In Germany
- 074 News media, journalism, publishing In France & Monaco
- 075 News media, journalism, publishing In Italy & adjacent territories
- 076 News media, journalism, publishing In Iberian Peninsula & adjacent islands
- 077 News media, journalism, publishing In eastern Europe In Soviet Union
- 078 News media, journalism, publishing In Scandinavia
- 079 News media, journalism, publishing In other languages
- 080 General collections
- 081 General collections American
- 082 General collections In English
- 083 General collections In other Germanic languages
- 084 General collections In French, Provencal, Catalan
- 085 General collections In Italian, Romanian, Rhaeto-Romanic
- 086 General collections In Spanish & Portuguese
- 087 General collections In Slavic languages
- 088 General collections In Scandinavian languages
- 089 General collections In other languages
- 090 Manuscripts & rare books
- 091 Manuscripts
- 092 Block books
- 093 Incunabula
- 094 Printed books
- 095 Books notable for bindings
- 096 Books notable for illustrations
- 097 Books notable for ownership or origin
- 098 [Prohibited work]?s, forgeries?, hoax?es
- 099 Books notable for format
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