The online National Library of Medicine Classification, available at, has been issued in a newly revised edition as of April 6, 2006.

Fifteen new class numbers were added to the schedules and ninety-eight MeSH terms were added to the index, including fifty-seven new to the MeSH vocabulary as of 2006; in addition, seventy-five schedule records and over four hundred fifty index entries were updated since the 2005 revised edition was published on April 26, 2005.

Requests for further information, questions, or comments, should be addressed to:  [log in to unmask]

Diane Boehr
Head, Cataloging Section
National Library of Medicine
8600 Rockville Pike MSC 3823
Bethesda, MD 20894 

301-402-1211 (fax)
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