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NLM Classification Updated, September 21, 2021 The 2021 summer version encompasses the systematic review of the WU (Dentistry. Oral Surgery) and WV (Otolaryngology) schedules. For more information about the scope of the 2021 summer edition, see https://classification.nlm.nih.gov/scope. Contact NLM<https://support.nlm.nih.gov/?from=> for further information, questions, or comments. __________________________________________________ Barbara Bushman Acting Head Cataloging and Metadata Management Section National Library of Medicine 8600 Rockville Pike Building 38, Room 1N08D Bethesda, MD 20894 301-480-1497 301-402-1211 (fax) [log in to unmask]<mailto:[log in to unmask]>