[Epidemiology of poliomyelitis in Spain during 1965 and 1966].
D000367:Age Factors; D002675:Child, Preschool; D006801:Humans; D007223:Infant; D011051:Poliomyelitis / Q000453:epidemiology*; D013030:Spain
Epidemiología de la poliomielitis en España durante los años 1965 y 1966.