00824naa#a2200181#i#450# EN\URAL'SKIY GOSUDARSTVENNYY AGRARNYY UNIVERSITET\bibl\2255 20240522011105.3 20180517b2018####ek#y0engy0150####ca RU THE INFLUENCE OF CONCENTRATION OF TOXICANTS IN FEEDS AND RATIONS ON THE PRODUCTION ENVIRONMENTALLY FRIENDLY MILK COWS Conference article/thesis Ekaterinburg Ural State Agrarian University 2018 4 с. Conference article/thesis local Сельское хозяйство. Лесное хозяйство. Охота. Рыбное хозяйство. 63 Общие вопросы сельского хозяйства. 68.01 grnti Romanova O. V. Gulevich M. G. usau.editorum.ru