Class Z: Bibliography. Library Science. Information resources is a classification used by the Library of Congress Classification system. This page outlines the sub-classes of Class Z.[1] [2]
4-115.5...............Books (General). Writing. Paleography
4-8..................History of books and bookmaking
40-104.5.............Writing
41-42.5.............Autographs. Signatures
43-45...............Calligraphy. Penmanship
48..................Duplicating processes. Copying services. Including mimeographing, multilithing
49-51.5.............Typewriters. Typewriting. Keyboards. Keyboarding
52-52.5.............Word processing
53-102..............Shorthand. Stenography. Phonography
102.5-104.5.........Cryptography. Cipher. Invisible writing
105-115.5............Manuscript. Paleography
116-659...............Book industries and trade
116.A2...............Treatises on the modern printed book
116.A3...............Book design
116.A5-265.5.........Printing
124-228.............History
231-234.............Printers and printing establishments
234................Medallic history of printing. Tokens
235-236.............Printer's marks, mottoes, etc.
237.................Paper. Watermarks, etc.
240-241.5...........Incunabula. Block books. Including broadsides, playing cards
242.9-264.5.........Practical printing. Including printing as a business, layout, paper and ink, machinery, type and type founding, electrotyping, desktop publishing, typesetting, presswork
265-265.5...........Representation or reproduction of books, documents, etc., by photography, microphotography, or other means
266-276..............Bookbinding. Book decoration
278-549..............Bookselling and Publishing
551-656..............Copyright
657-659..............Freedom of the press. Censorship
662-1000.5............Libraries
662-664..............Collections
665-718.8............Library science. Information science
668-669.7...........Library education. Research
672-Z672.13.........Library cooperation and coordination
674.7-674.83........Library information networks
675.................Classes of libraries
678-678.88..........Library administration and organization. Constitution
678.89-678.892......Library service agencies
678.9-Z678.93.......Automation
679-680.............Library buildings. Library architecture. Including planning, space utilization, security, safety, lighting, etc.
680.3-680.6.........Library communication systems
681-681.3...........Reproduction of library materials. Storage media of library materials
681.5-681.7.........Trustees. Library boards, committees, etc.
682-682.4...........Personnel
683-683.5...........Finance. Insurance
684-685.............Supplies. Shelving. Bookstacks
686.................Branches. Delivery stations. Bookmobiles
687-718.85..........The collections. The books
688................Special collections
688.5-688.6........Processing
689-689.8..........Acquisition (selection, purchase, gifts, duplicates)
690................Exchanges
691-692............Special classes of materials. Including manuscripts, maps, microforms, serials
693-695.83.........Cataloging
695.85.............Library handwriting
695.87.............Printing of catalogs
695.9-695.94.......Indexing. Abstracting
695.95.............Alphabetizing. Filing
695.98.............Recataloging. Reclassification
696-697............Classification and notation
698................Shelflisting. Author notation
699-699.5..........Machine methods of information and retrieval. Mechanized bibliographic control
699.7..............Physical processing. Shelf preparation
700................Bookbinding
700.9-701.5........Physical parameters, preservation, conservation and restoration of books and other library materials
702................Thefts and losses of books and other library materials
703.5..............Stack management. Disposition of books on shelves, etc.
703.6..............Discarding. Weeding
711-711.95..........Public services. Reference services
712-714.............Circulation. Loans. Charging systems
716-716.15..........Library extension. Library commissions. Traveling libraries
716.2-718.85........Libraries in relation to special topics. Including libraries and community, libraries and television, children's libraries, libraries and students
719-723..............Libraries (General)
729-875..............Library reports. History. Statistics
881-977..............Library catalogs and bulletins
987-996.3............Book collecting. Including bibliophilism, bookplates
997-997.2............Private libraries
999-1000.5...........Booksellers' catalogs
1001-1121.............General Bibliography
1001.................Introduction to bibliography. Theory, philosophy, psychology. Bibliography. Documentation
1003-1003.5..........Choice of books. Books and reading. Book reviews
1003.8-1004..........Biography of bibliographers
1011-1017............General bibliographies
1019-1033............Special classes of books. Including prohibited books, rare books, paperbacks, reprints
1035-1035.9..........Best books
1036.................Booksellers' general catalogs of modern books
1037-1039............Books for special classes of persons, institutions, etc.
1041-1107............Antonyms and pseudonyms
1201-4980.............National bibliography
1201-1946............America
1215-1363..........United States
1365-1401..........Canada. British North America
1411-1939..........Mexico. Central America. West Indies. South America
1975................Eastern Hemisphere
2000-2959...........Europe
3001-3496...........Asia
3501-3975...........Africa
4001-4980...........Australia. Oceania
5051-7999............Subject bibliography. Subjects arranged in alphabetical sequence
8001-8999............Personal bibliography. Names of individuals arranged in alphabetical sequence
3038-5190...........Information resources (General)
3150-3159..........Information services. Information centers
3201-3250..........Information superhighway
4050-4775..........Information in specific formats or media
4050-4480.........Electronic information resources
4150-4380........Computer network resources
4450-4460........Databases
4550-4575..........Motion pictures. Video recordings
4650-4675..........Pictures. Photographs
4750-4775..........Sound recordings
5049-5190...........Government information