title: [Once and now: tropical medicine and its tasks].
mesh_terms: D004463:Ecology; D005843:Geography; D049671:History, 18th Century; D049672:History, 19th Century; D049673:History, 20th Century; D011315:Preventive Medicine; D014329:Tropical Climate; D014330:Tropical Medicine / Q000266:history
vernacular_title: Einst und jetzt: Die Tropenmedizin und ihre Aufgaben.