Some historical notes on the development of anesthetics.
D000766:Anesthesia, Dental / Q000266:history*; D000777:Anesthetics / Q000266:history*; D004739:England; D049671:History, 18th Century; D049672:History, 19th Century; D049673:History, 20th Century; D014481:United States
D000777:Anesthetics