TY JOUR TI BIOLOGICAL SAFETY OF CROP PRODUCTION OF AGRICULTURAL REGIONS OF RUSSIA KW grain KW biological security KW fungi KW contamination KW mycotoxins KW zero tillage. JO Vestnik of Kazan State Agrarian University AU Bakhchevnikov, O.. AU Braginets , S.. AU Pakhomov, V.. AU Svistunov, A.. PY 2015 IS 10 PB Kazan state agrarian University