title: [Causes of variability in the morphological development of bird embryos].
mesh_terms: D000818:Animals; D002642:Chick Embryo / Q000254:growth & development*; D005260:Female; D009024:Morphogenesis; D010063:Ovum / Q000166:cytology*
vernacular_title: O prichinakh izmenchivosti morfologicheskogo razvitiia zarodysheĭ ptits.