TY JOUR TI NUTRITIONAL VALUE OF GRAIN VARIETIES OF SPRING BARLEY OF TATAR RESEARCH INSTITUTE SELECTION KW spring barley (Hordeum sativum L.) KW selection KW variety KW grain KW chemical composition KW nutritional value JO Vestnik of Kazan State Agrarian University AU Blohin, V.I. AU Nikiforova, I.Y. AU Ganieva, I.S. AU Serzhanov, I.. PY 2022 IS 16 PB Kazan state agrarian University