Precordial and oesophageal stethoscopes.
Westhorpe
R N
RN
Geoffrey Kaye Museum of Anaesthetic History.
Ball
C
C
D000776:Anesthesiology / Q000266:history*; D004867:Equipment Design / Q000266:history; D049671:History, 18th Century; D049672:History, 19th Century; D049673:History, 20th Century; D049674:History, 21st Century; D019023:Stethoscopes / Q000266:history*