OCLC (identifier)

OCLC dey assign a unique control number (dem refer to as an "OCN" for "OCLC Control Number") to each new bibliographic record insyd WorldCat. Dem dey assign numbers serially, den insyd mid-2013 na dem create over a billion OCNs. Insyd September 2013, de OCLC declare dese numbers to be insyd de public domain, wey dey remove a perceived barrier to widespread use of OCNs outsyd OCLC ein self. De control numbers dey link WorldCat ein records to local library system records by dem dey provide a common reference key for a record across libraries.

 References 

 External links 
Wikimedia Commons get media wey relate to OCLC.

 Official website 
 Hanging Together – the OCLC Research blog
 OCLC Annual Reports collection at de OCLC Archives


Category:1967 establishments insyd Ohio
Category:Bibliographic database providers
Category:Companies dem base insyd Dublin, Ohio
Category:Cooperatives dem base insyd Ohio
Category:Library automation
Category:Library cataloging den classification
Category:Library centers
Category:Library-related organizations
Category:Organizations dem establish insyd 1967