title: [30 years of maternal and child welfare in the Polish People's Republic].
mesh_terms: D002669:Child Welfare / Q000266:history*; D049673:History, 20th Century; D008429:Maternal Welfare / Q000266:history*; D011044:Poland
vernacular_title: XXX lat ochrony zdrowia matki i dziecka w Polskiej Rzeczypospolitej tludowej