title: [Secondary sex ratio in Kać and Kovilj over the past 100 years].
mesh_terms: D005260:Female; D006801:Humans; D007231:Infant, Newborn; D008297:Male; D012744:Sex Ratio; D015022:Yugoslavia
vernacular_title: Sekundarni odnos polova u Kaću i Kovilju za poslednjih 100 godina.