TY JOUR TI EFFECT OF BACILLUS SUBTILUS PREPARATIONS ON HEIGHT AND WEIGHT OF HOLSTEIN-FRIESIAN CALVES KW calves KW potential KW Bacillus Subtilus KW growth KW gain KW parameters JO Bulletin Samara State Agricultural Academy AU Molyanova, G.V. AU Nogotkov, M.P. PY 2021 IS 6 PB Samara State Agricultural Academy