ФИО:
Ostretsova Nadezhda Gennadyevna
About author:
The Federal State Budgetary Educational Institution of Higher Education the Vereshchagin State Dairy Farming Academy of Vologda
e-mail:
lugovaya22@mail.ru
The Federal State Budgetary Educational Institution of Higher Education the Vereshchagin State Dairy Farming Academy of Vologda