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  1. NLM Classification 2018 Summer Edition Now Available. NLM Technical Bulletin. 2018 Jul–Aug 
    https://www.nlm.nih.gov/.../ja18_nlm_classification_summer_2018.html
    ... Etiology WT 155 WT 160 [Dementia. Alzheimer disease] Prevention and control WT 155 WT 161 [Dementia. Alzheimer ... to the first level index terms treeing under Respiratory System , e.g., Pharynx . WS ... disorders] WS 350.55 Socioenvironmental therapy The caption for ...
  2. NLM Classification 2021 Winter Edition Now Available. NLM Technical Bulletin. 2021 Jan–Feb 
    https://www.nlm.nih.gov/.../jf21_nlm_classification_winter_2021.html
    ... G) WC 506.5 Complications WC 506.6 Prevention and control WC 506.7 Psychological aspects. Socioeconomic ...
  3. NLM Classification 2016 Edition Now Available. NLM Technical Bulletin. 2016 May–Jun 
    https://www.nlm.nih.gov/.../mj16/mj16_nlm_classification_2016.html
    ... Neoplasms] Genetic aspects QZ 200 QZ 250 [Neoplasms] Prevention and control QZ 200 QZ 270 Combined modality ... Not Table G) WE 16 WF 16.1 [Respiratory System--Tables. Statistics. Surveys] ... 190 Local disorders of growth n/a QZ 350 Leukemia. Lymphoma. ...
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