The indexing waltz.
Bray
G A
GA
D001635:Bibliography of Medicine; D005858:Germany; D049672:History, 19th Century; D049673:History, 20th Century; D006801:Humans; D008523:MEDLARS / Q000266:history*; D009317:National Library of Medicine (U.S.) / Q000266:history; D010506:Periodicals as Topic / Q000266:history; D014481:United States