title: [Analysis of child mortality in the 1- to 4-year-old age group in Poland in 1950-1979].
mesh_terms: D000293:Adolescent; D000367:Age Factors; D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D007223:Infant; D007226:Infant Mortality; D008297:Male; D009026:Mortality; D011044:Poland; D012424:Rural Population; D012737:Sex Factors; D014505:Urban Population
vernacular_title: Analiza umieralności dzieci w wieku 1-4 lat w polsce w latach 1950-1979.