TY JOUR TI Modeling of productional process and assessment of a biological crop of winter wheat in the conditions of Central Volga area KW bio-climatic potential KW biological productivity KW production process modeling KW biological functions. JO Vestnik of Kazan State Agrarian University AU Glukhovtsev, V.. AU Samokhvalova, E.. PY 2014 IS 9 PB Kazan state agrarian University