The biomedical information explosion: from the index-catalogue to MEDLARS.
D000043:Abstracting and Indexing / Q000266:history; D006664:History; D049672:History, 19th Century; D049673:History, 20th Century; D007990:Libraries / Q000266:history*; D008523:MEDLARS / Q000266:history; D009317:National Library of Medicine (U.S.) / Q000266:history; D010506:Periodicals as Topic / Q000266:history*; D014481:United States