Index Medicus. A century of medical citation.
D000043:Abstracting and Indexing / Q000266:history; D000574:American Medical Association / Q000266:history; D002381:Catalogs, Library; D001330:Electronic Data Processing / Q000266:history; D049672:History, 19th Century; D049673:History, 20th Century; D008523:MEDLARS / Q000266:history*; D008887:Military Medicine / Q000266:history; D009317:National Library of Medicine (U.S.) / Q000266:history; D014481:United States