title: [Incidence of immature foetus births in relation to community size (author's transl)].
mesh_terms: D003604:Czechoslovakia; D006801:Humans; D007231:Infant, Newborn; D007234:Infant, Premature; D011156:Population Density
vernacular_title: Vztah výskytu porodů nezralých plodů k velikosti sídel.