000 Generalities & computer science

• 001 Knowledge 
• 001.1 Intellectual Life
• 001.2 Scholarship and Learning
• 001.3 Humanities
• 001.4 Research
• 001.9 Controversial knowledge
• 002 The book
• 003 Systems
• 004 Data processing, Computer science 
• 004.1 General works on specific types of computers
• 004.2 Systems analysis and design, computer architecture
• 004.5 Storage
• 004.6 Interfacing and communications
• 004.7 Peripherals
• 005 Computer programming, programs, data 
• 005.1 Programming
• 005.2 Programming for specific types of computers
• 005.3 Programs
• 005.4 Systems programming and programs
• 005.6 Microprogramming and microprograms
• 005.7 Data in computer systems

005.8 Data security
• 006 Special computer methods 
• 006.3 Artificial intelligence
• 006.4 Computer pattern recognition
• 006.5 Computer sound synthesis
• 006.6 Computer graphics

• 010 Bibliography
• 011 Bibliographies 
• 011.6 General bibliographies of works for specific kinds of users
• 012 Of individuals
• 013 Of works by specific classes of authors
• 014 Of anonymous and pseudonymous works
• 015 Of works from specific places
• 016 Of works on specific subjects
• 017 General subject catalogs
• 018 Catalogs arranged by author and date
• 019 Dictionary catalogs

• 020 Library & information sciences
• 021 Relationships of libraries, archives, information centers 
• 021.2 Relationships with the community
• 021.6 Cooperation and networks
• 021.7 Promotion of libraries, archives, information centers
• 021.8 Relationships with government
• 022 Administration of the physical plant
• 023 Personnel administration
• 025 Library operations 
• 025.1 Administration
• 025.2 Collection development and acquisitions
• 025.3 Bibliographic analysis and control
• 025.4 Subject analysis and control
• 025.5 Services to users
• 025.6 Circulation services
• 025.7 Physical preparation for storage
• 025.8 Maintenance and preservation of collections
• 026 Libraries for specific subjects
• 027 General libraries 
• 027.4 Public libraries
• 027.5 Government libraries
• 027.6 Libraries for special groups and organizations
• 027.7 College and university libraries
• 027.8 School libraries
• 028 Reading and use of other information media 
• 028.1 Reviews
• 028.5 Reading and use of other information media by children and young adults
• 028.7 Use of books and other media as sources of information

• 030 General Encyclopedic works. ie. Britannica
• 031 American. ie. Americana
• 032 In English
• 033 In other Germanic languages
• 034 In French,  Provençal,  Catalon
• 035 In Italian, Romanian, Rhaeto-Romanic
• 036 In Spanish & Portuguese
• 037 In Slavic Languages
• 038 In Scandinavian languages
• 039 In other languages

• 050 General serials & their indexes 
• 050.9 Historical, geographic, persons treatment
• 051 American
• 052 In English
• 053 In other Germanic languages
• 054 In French, Provençal, Catalon
• 055 In Italian, Romanian, Rhaeto-Romanic
• 056 In Spanish & Portuguese
• 057 In Slavic Languages
• 058 In Scandinavian languages
• 059 In other languages

• 060 General organizations & museology 
• 060.4 General rules of order (Parliamentary procedure)
• 060.9 Historical and persons treatment
• 061 In North America
• 062 In British Isles; In England
• 063 In central Europe; In Germany
• 064 In France & Monaco
• 065 In Italy & adjacent territories
• 066 In Iberian Peninsula & adjacent islands
• 067 In eastern Europe; In Soviet Union
• 068 In other areas
• 069 Museology (Museum science)

• 070 News media, journalism, publishing 
• 070.1 Documentary media, educational media, news media
• 070.4 Journalism
• 070.5 Publishing
• 070.9 Historical and persons treatment of journalism and newspapers
• 071 In North America
• 072 In British Isles; In England
• 073 In central Europe; In Germany
• 074 In France & Monaco
• 075 In Italy & adjacent territories
• 076 In Iberian Peninsula & adjacent islands
• 077 In eastern Europe; In Soviet Union
• 078 In Scandinavia
• 079 In other areas

• 080 General collections 
• 080.9 Historical, geographic, persons treatment
• 081 American
• 082 In English
• 083 In other Germanic languages
• 084 In French, Provençal, Catalon
• 085 In Italian, Romanian, Rhaeto-Romanic
• 086 In Spanish & Portuguese
• 087 In Slavic Languages
• 088 In Scandinavian languages
• 089 In other languages

• 090 Manuscripts and 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 works, forgeries, hoaxes
• 099 Books notable for format