Licensing NLM Bibliographic Products

NLM bibliographic records are available in either the MARC 21 communications format or in XML format on a subscription basis. NLM currently offers three MARC 21 bibliographic products: Catfile, CatfilePlus, and Serfile. CatfilePlus and Serfile are also available in XML. See Leasing Data from the National Library of Medicine or contact for more information.

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Last reviewed: 02 December 2008
Last updated: 02 December 2008
First published: 25 March 2004
Metadata| Permanence level: Permanence Not Guaranteed