Ventures in world health : the memoirs of Fred Lowe Soper - Duffy, John 1915-; Soper, Fred Lowe 1893-1977 (Washington, D.C. : Pan American Health Organization. Pan American Sanitary Bureau, Regional Office, 1977)
Keywords: SOPER, FRED LOWE -- 1893-1977; FIEBRE AMARILLA; PREVENCION; HISTORIA; AMERICA