title: [ETIOLOGY OF MALE STERILITY IN BULGARIA].
mesh_terms: D002031:Bulgaria; D006801:Humans; D007246:Infertility; D007248:Infertility, Male; D008297:Male; D013223:Statistics as Topic
keywords: BULGARIA; STATISTICS; STERILITY, MALE
vernacular_title: ETIOLOGIIA NA MUZHKOTO BEZPLODIE U NAS.