Evaluasi Kelayakan Usaha Penggemukan Sapi Potong Gaduhan di Desa Grantung Kecamatan Bayan Kabupaten Purworejo (The Feasibility Evaluation of Beef Cattle Fattening by Sharing System in Grantung Vilage, Bayan Subdistrict of Purworejo Regency) - (Zulfanita), Zulfanita (Faculty of Animal Science, Universitas Gadjah Mada, 2012)