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
UDC Consortium - New Members
We have great pleasure announcing that the National Library of Poland and National Széchényi Library (Hungary) have joined the UDC Consortium. Both libraries are working on preparing updates to their previous UDC editions and are expanding support to UDC users in their countries.
CDU Online - Français Subscriptions Open
CDU Online - Français is now available for subscriptions. One-week free trials are also available. To apply for free access for library schools see CDU Online pour l'enseignement.
First ISKO-Low Countries Conference - "Morsels of Knowledge" (Conference and Inaugural Meeting)
Brussels (Belgium)
IFLA World Library and Information Congress - 85th IFLA General Conference and Assembly
Athens (Greece)
ISKO France Conference 2019 - "Open data and megadata in Social Sciences: new challenges for the state and organization of knowledge?"
Montpellier (France)