[Characteristics of the mortality causes in children 1-4 years of age in Poland in the years 1956-67].
D002675:Child, Preschool; D006801:Humans; D007223:Infant; D007226:Infant Mortality; D009026:Mortality; D011044:Poland
Charakterystyka przyczyn umieralności dzieci w wieku 1-4 lata w Polsce w latach 1956-67.