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FAQ: Added or Changed NLM Classification Numbers

Question: Has NLM added or changed any NLM classification numbers since the last edition of the NLM classification scheme?


The online National Library of Medicine Classification, is available at // Beginning with the 2002 edition, the National Library of Medicine Classification is published in electronic form and updated annually.

For the latest changes, see Scope of Revision at // and Class Numbers Added and Canceled at //

Additions and changes to the NLM classification scheme are announced on an irregular basis in the NLM Technical Bulletin at

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