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Universal decimal classification (UDC). Selection of the most important UDC numbers
Standard published on 1.4.1984
Selected format:Documentation. Bibliographic filing principles
Standard published on 1.10.1999
Selected format:Alphabetical arrangement
WITHDRAWN published on 1.3.1977
Selected format:Codes for the representation of languages
WITHDRAWN published on 1.6.1977
Selected format:Information sources. Terminology
WITHDRAWN published on 1.4.1978
Selected format:Alphabetical ordering of multilingual terminological and lexicographical data represented in the Latin alphabet
WITHDRAWN published on 1.12.2006
Selected format:Documentation. Numbering of divisions and subdivisions in written documents
Standard published on 1.9.1997
Selected format:Numbering of divisions and subdivisions in written documents
WITHDRAWN published on 1.4.1986
Selected format:Transliteration of cyrillic characters
WITHDRAWN published on 1.9.1975
Selected format:Representation of dates and times
WITHDRAWN published on 1.3.1982
Selected format:Latest update: 2026-04-26 (Number of items: 2 274 794)
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