TY JOUR TI ACTUALITY OF APPLICATION OF BIOGAS INSTALLATIONS IN RUSSIA AND ABROAD KW Farm KW biogas plant KW energy saving KW economic efficiency. JO Vestnik of Kazan State Agrarian University AU Ziganshin, B.G. AU Kashapov , I.. AU Gayfullin, I.. AU Shogenov, Y.. AU Rudakov , A.. PY 2017 IS 12 PB Kazan state agrarian University