title: [In memoriam: Fred L. Soper, 1893-1977].
mesh_terms: D049672:History, 19th Century; D049673:History, 20th Century; D010175:Pan American Health Organization / Q000266:history; D011634:Public Health / Q000266:history; D014481:United States
vernacular_title: In memoriam: Doctor Fred L. Soper, 1893-1977