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
Programme - International UDC Seminar 2017
10/05/2017
The International UDC Seminar 2017 "Faceted Classification Today: Theory, Technology and End Users" will take place in London on 14-15 September 2017 at Wellcome Collection.
UDC number interpreter/parser
29/01/2017
An interpreter (parser) for complex UDC number can be accessed here. The program works independently from the UDC Master Reference File data and is based on an XML Schema designed to describe the most specific UDC numbers (available for download here.