title: 50, 100 &150 Years Ago.
authors.forename: Daniel C
authors.initials: DC
authors.lastname: Schlenoff
mesh_terms: D004194:Disease; D006262:Health / Q000266:history*; D049672:History, 19th Century; D049673:History, 20th Century; D049674:History, 21st Century; D006801:Humans; D009812:Odorants / Q000032:analysis; D011158:Population Growth; D011859:Radiography; D012964:Sodium / Q000266:history; D013672:Technology / Q000266:history*; D014947:Wounds and Injuries / Q000000981:diagnostic imaging
chemical_list: D012964:Sodium