TY JOUR TI INTERNAL AUDIT - EFFECTIVE INSTUMENTY OF CORPORATE GOVERNANCE SYSTEM KW system of internal control KW internal audit KW management. JO Vestnik of Kazan State Agrarian University AU Zakirova, A.R. AU Klychova, A.S. AU Klychova, G.S. AU Gimadiev, I.. PY 2016 IS PB Kazan state agrarian University