TY JOUR TI ECONOMIC METHODS FOR LEVELING THE CARBON FOOTPRINT IN GRAIN SUB-COMPLEX KW greenhouse gas emissions KW import substitution KW grain production KW carbon footprint KW digitalization KW agriculture. JO Vestnik of Kazan State Agrarian University AU Amirova, E.. AU Ziganshin, B.G. PY 2023 IS 17 PB Kazan state agrarian University