[Infantile paralysis in Spain; studies on the epidemic outbreak in 1952].
D004196:Disease Outbreaks; D058872:Epidemics; D006801:Humans; D011051:Poliomyelitis / Q000453:epidemiology*; D013030:Spain
POLIOMYELITIS/epidemiology
La parálisis infantil en España; estudio del brote epidémico de 1952.