title: [Pathologico--anatomic analysis of morbidity and causes of death during the perinatal period and in early infancy in the Bulgarian People's Republic from 1 May 1979 to 1 May 1980. I. Structure of infant morbidity].
mesh_terms: D002031:Bulgaria; D005260:Female; D005313:Fetal Death / Q000453:epidemiology*; D006801:Humans; D007223:Infant; D007226:Infant Mortality; D007231:Infant, Newborn; D007232:Infant, Newborn, Diseases / Q000453:epidemiology*; D009017:Morbidity; D011247:Pregnancy
vernacular_title: Patologoanatomichen analiz na zaboliaemostta i prichinite za smurtnost v perinatalna i ranna detska vuzrast v NRB za perioda 1. V. 1979--1. V.1980 g. I. Struktura na detskata zaboliaemost.