title: [Ontogenesis and phylogenesis of secondary sex characters in fowl species].
authors.forename: N N
authors.initials: NN
authors.lastname: TRET'IAKOV
mesh_terms: D000818:Animals; D005075:Biological Evolution; D001717:Birds; D010802:Phylogeny
keywords: BIRDS; EVOLUTION
vernacular_title: K izucheniiu ontogeneza i filogeneza vtorichnopolovykh priznakov kurinykh ptits.