title: [Perinatal mortality in Spain 1951-1970].
mesh_terms: D000293:Adolescent; D000328:Adult; D005260:Female; D005313:Fetal Death; D006801:Humans; D007226:Infant Mortality; D008423:Maternal Age; D008875:Middle Aged; D010298:Parity; D011247:Pregnancy; D013030:Spain
vernacular_title: Mortalidad perinatal (mortinatalidad) en España 1951-1970