TY JOUR TI THE USE OF SELEMIX DRUG FOR OF MINERAL METABOLISM VIOLATION OF CATTLE AND PIGS KW JO Bulletin Samara State Agricultural Academy AU Savinkov, A.V. AU Datchenko, O.O. AU Lapteva, A.I. AU Suvorov, B.V. PY 2017 IS 2 PB Samara State Agrarian University