ANALISIS PERILAKU PASAR PAKAN DAN DAGING AYAM RAS DI INDONESIA: PENDEKATAN MODEL EKONOMERIKA SIMULTAN (FEED AND CHICKEN MEAT MARKETS BEHAVIOR ANALYSIS IN INDONESIA: SIMULTANEOUS ECONOMETRIC MODEL APPROACH)) - KARIYASA, KETUT (SOCA (SOCIO-ECONOMIC OF AGRICULTURRE AND AGRIBUSINESS), 2012)