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
New Spanish Abridged Edition
AENOR has published a new abridged UDC edition which includes the most recent changes in the scheme. This abridged edition contains over 30.000 classes particularly suitable for teaching and training.
New UDC Online in Spanish
UDC Online in the Spanish language "CDU Online EspaƱol" was released in January 2016 and is now opened for subscriptions. A two-week free trial is also available.