TY JOUR TI ASSESSMENT OF AGROMETEOROLOGICAL INDICATORS OF ATMOSPHERIC DROUGHTS AND YIELD OF GRAIN CROPS UNDER THE CHANGING CONDITIONS OF THE REGIONAL CLIMATE KW drought KW temperature KW precipitation KW coefficient KW climate JO Bulletin Samara State Agricultural Academy AU Nemtsev, S.N. AU Sharipova, R.B. PY 2020 IS 5 PB Samara State Agrarian University