[Apropos of the current outbreak of smallpox. 1916].
Del Valle Atiles
F
F
D004196:Disease Outbreaks / Q000266:history*; D049673:History, 20th Century; D006801:Humans; D011647:Puerto Rico / Q000453:epidemiology; D012899:Smallpox / Q000453:epidemiology / Q000266:history*