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.
Follow us:  
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
UDC Update Meeting at IFLA WLIC 2019
The UDC Update meeting at IFLA WLIC 2019 will take place on Sunday, 25 August 2019 at 12.30- 13:30 in Business Meeting Room 1 (Megaron Athens International Convention Centre - Session 075 in IFLA Programme).
National Library of Serbia joins UDC Consortium
In 2019, the National Library of Serbia joined the UDC Consortium. The NLS is one of the seven national libraries members of the Consortium.
ISKO France Conference 2019 - "Open data and megadata in Social Sciences: new challenges for the state and organization of knowledge?"
Montpellier (France)