TY JOUR TI PERSPECTIVITY OF USING DIFFERENT COMMERCIAL PREPARATIONS FOR ACCELERATION OF THE “GROWING” PROCESS OF CHICKEN DROPPINGS KW free- chicken manure KW Mefosfon KW biologically active drugs KW hazard class JO Vestnik of Kazan State Agrarian University AU Sibagatullin, F.S. AU Haliullina, Z.M. AU Petrov, A.M. AU Sinyashin, K.O. PY 2019 IS 14 PB Kazan state agrarian University