title: Alexander von Humboldt and his discoveries, drugs and devices of interest to anesthesiologists.
mesh_terms: D000769:Anesthesia, Inhalation / Q000295:instrumentation; D000776:Anesthesiology / Q000266:history*; D005858:Germany; D049671:History, 18th Century; D049672:History, 19th Century; D008397:Masks