00555naa#a2200193#i#450# EN\\bibl\112540 20260118201015.7 2311-1402 20190625b2019####ek#y0engy0150####ca RUS RU TOXIC ELEMENTS CONTENT ANALYSIS OF BLOOD AND MILK OF COWS Journal article Nizhnevartovsk Nizhnevartovsk State University 2019 5 с. Journal article local . 631.95:636.2.034 RUS Zaznobina T V Ivanova O V vestnik.nvsu.ru