ФИО:
Petrov Yevgeniy Yur’yevich
About author:
the Federal State Budgetary Educational Institution of Higher Education the Vereshchagin State Dairy Farming Academy of Vologda
e-mail:
octavia17835@gmail.com
the Federal State Budgetary Educational Institution of Higher Education the Vereshchagin State Dairy Farming Academy of Vologda