Paul Francis Wehrle.
Oransky
Ivan
I
D049673:History, 20th Century; D049674:History, 21st Century; D010372:Pediatrics / Q000266:history*; D012899:Smallpox / Q000266:history* / Q000517:prevention & control; D012900:Smallpox Vaccine / Q000266:history; D014481:United States
D012900:Smallpox Vaccine