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The online National Library of Medicine Classification, available at http://www.nlm.nih.gov/class/, has been issued in a newly revised edition as of April 30, 2012.

Summary Statistics for the 2012 NLM Classification

 *   37 class numbers added
 *   178 class number captions or notes modified
 *   4 class numbers canceled
 *   2 Table G numbers (Geographic notation) added for South Korea (JK6) and North Korea (JK7); Korea was moved to the Historical Geographic Locations section retaining the same Table G (JK6)
 *   88 index main headings added
 *   578 index entries modified
 *   218 index headings deleted

Contact NLM<http://apps.nlm.nih.gov/mainweb/siebel/nlm/index.cfm> for further information, questions, or comments.