Estimasi Dinamika Populasi dan Produktivitas Sapi Bali di Kabupaten Kepulauan Yapen, Propinsi Papua (Estimation of the Dynamics of Population and Productivity of Bali Cattle in Kepulauan Yapen Regency, Papua Province) - Samberi, Karel Yohanis (Faculty of Animal Science, Universitas Gadjah Mada, 2012)