NCBI Bookshelf. A service of the National Library of Medicine, National Institutes of Health.

About Bookshelf [Internet]. Bethesda (MD): National Center for Biotechnology Information (US); 2010-.

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About Bookshelf [Internet].

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Information for Librarians

MARC Records

Recent Releases

In April, 2011, the National Library of Medicine (NLM) Cataloging Section began maintaining MARC 21 records for Bookshelf titles. Batches of records are released as they become available or are updated, and may be downloaded by release date from Bookshelf’s public ftp site at:

NLM Catalog

It is also possible to view all available catalog records for books and resources in Bookshelf by using the NLM Catalog. Within the Search field on the NLM Catalog home page at, enter the following search query:



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