[Type 3 poliomyelitis epidemic in Poland in 1968].
D000367:Age Factors; D002675:Child, Preschool; D006801:Humans; D007223:Infant; D011044:Poland; D011051:Poliomyelitis / Q000453:epidemiology* / Q000628:therapy; D012621:Seasons; D014611:Vaccination
Epidemia poliomyelitis typu 3 w Polsce w 1968 r.