UDC Editions
From 1992, UDC standard schedules have been maintained and developed as UDC Master Reference File (UDC MRF). This standard file, containing around 72,000 records is basis for all printed and online editions. The last UDC MRF version is released in 2019.
Over time, UDC Editions, were produced in 40 languages. An abridged online version UDC Summary (2,600 classes) is available in over 57 languages. Currently, up-to-date UDC editions are published online. There are complete, standard UDC schedules available in 11 languages (see UDC Hub below).
- A historical overview of UDC editions (Updated 05/07/2010)
- A Bibliography of last reported UDC editions (Updated 10/03/2011)
The last comprehensive research on the history of UDC translations and editions, was published in the Extensions and Corrections, 26 (2004), contains a chronological summary of the editions and bibliography of last reported editions in 39 languages, and is available here.
Information about UDC use world-wide is available here.
Selection of complete printed editions
In English: UDC: Universal Decimal Classification. Standard edition. 2 volumes. London : BSI, 2005.
Volume 1 - Systematic tables, ISBN 0 580 45469 X
Volume 2 - Alphabetical Index, ISBN 0 580 45470 3
In French: Classification décimale universelle. Édition moyenne internationale en 3 volumes. Liège, Éditions du C.E.F.A.L., 2004. ISBN 2-87130-152-2.
In Spanish: Clasificación Decimal Universal (CDU). Norma UNE 50001: 2015. Printed edition in 3 volumes. Madrid, AENOR, 2015. ISBN: 978-84-8143-822-2 [for the complete set]
In Portuguese (Brazil): Classificação Decimal Universal. 2nd standard international ed. in Portuguese. Editor in chief Regina Coeli S. Fernández. Brasília : Ministerio de Ciẽncia e Tecnología; Instituto Brasileiro de Informação em Ciẽncia e Tecnologia, 2007. (Publicação no UDC-P053)
Volume 1. Tabelas sistemáticas; 1257 pp. ISBN 978-85-7013-075-4
Volume 2. Indice alfabético ; 603 pp. ISBN 978-85-7013-074-7
UDC Online editions
Two services contain UDC in multiple languages:
- UDC Summary (57 languages, over 2600 UDC classes, free access and use)
- UDC Online Hub (complete UDC in multiple languages
Current UDC language editions
In English: UDC Online English (complete edition, paid service, free trial period)In Spanish: CDU Online español (complete edition, paid service, free trial period)
In Dutch: UDC Online Nederlands (complete edition, paid service, free trial period)
In Croatian: Hrvatski UDK Online (complete edition, free subscription)
In Czech: České MDT Online (complete edition, free subscription)
In French: CDU Online Français (complete edition, paid subscription)
In Polish: Polska UKD Online (complete edition, free subscription)
In Serbian: Српски УДК Онлајн (complete edition, free subscription)
In Slovakian: Slovenské MDT Online (standard edition, free subscription)
In Slovenian: 4. elektronska izdaja tabel Univerzalne decimalne klasifikacije UDCMRF12 (standard edition 2020, paid service)
In Portuguese: Classificação Decimal Universal - português do Brasil (standard edition 2025)
In Swedish: Universella decimalklassifikationen (Abridged edition, 6100 classes, free access)The first UDC editions
- Manuel du Repertoire Bibliographique Universel, Brussels: IIB, 1905-1907.
- Classification Décimale Universelle, (FID 151), Brussels: IIB, 1927-1933.
- Dezimal-Klassifikation (Gesamtausgabe), (FID 196), Berlin: DNA. ,1934-1953.
