Medical bibliography and MEDLARS.
D000043:Abstracting and Indexing; D001634:Bibliographies as Topic; D003142:Communication; D003201:Computers; D049669:History, 16th Century; D049672:History, 19th Century; D049673:History, 20th Century; D007256:Information Systems; D007993:Libraries, Medical / Q000266:history; D009317:National Library of Medicine (U.S.); D011643:Publishing; D014481:United States