Universal Decimal Classification
UDC is one of the most widely used classification schemes for all fields of knowledge. It is used in libraries, bibliographic, documentation and information services in over 130 countries around the world and is published in over 40 languages.
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UDC Consortium
The UDCC is a non-profit association of publishers established to maintain, develop and distribute the UDC for the benefit of its users. Apart from its strategic, managerial and promotional responsibilities, the UDCC also appoints an editorial team and advisory board to oversee the content of the scheme and contribute to its regular revision in order to reflect new knowledge.
UDC Books and Schedules
 
News
Call for Papers - International UDC Seminar 2017
04/12/2016
Faceted Classification Today: Theory, Technology and End Users will take place in London on 14-15 September 2017. The objective of the conference is to revisit faceted analytical theory as a method for (re)constructing modern classifications and indexing languages and the role analytico-synthetic classifications have had in resource discovery and retrieval, from their introduction at the beginning of the 20th century to date.
New Spanish Abridged Edition
15/07/2016
AENOR has published a new abridged UDC edition which includes the most recent changes to the scheme. This abridged edition contains over 30.000 classes particularly suitable for teaching and training.
Events
December
13
Smart Future - Knowledge Trends that will Change the World - International Conference on Digital Libraries - ICDL 2016
New Delhi (India)
June
15
Visualizing Knowledge Organization: Bringing Focus to Abstract Realities - The Sixth North American Symposium on Knowledge Organization (NASKO 2017)
Champaign, IL (USA)