TY JOUR TI EVALUATION OF INFLUENCE OF VARIOUS FACTORS ON THE DIFFERENTIALITY OF SPRING WHEAT SEEDS KW spring wheat KW seeds KW quality of seeds. JO Vestnik of Kazan State Agrarian University AU Safin, R.. AU Sharafutdinov, G.. AU Reshetnyak, V.V. AU Validov, S.Z. PY 2017 IS 12 PB Kazan state agrarian University