00758naa#a2200181#i#450# EN\FNC «VIK IM. V. R. VIL'YAMSA»\bibl\7629 20251215051733.1 20220817b2022####ek#y0engy0150####ca RU Efficiency of breeding by fertility of Romanov sheep Conference article/thesis Lobnya Federal Williams Research Center of Forage Production and Agroecology 2022 5 с. Conference article/thesis local Сельское хозяйство. Лесное хозяйство. Охота. Рыбное хозяйство. 63 ABRAMOVA Marina Vladimirovna BARYShEVA Mariya Sergeevna KOSTYLEV Mihail Nikolaevich adaptagro.editorum.ru