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Ramadhani, M.; Indrawati, Y.H.; Rahman, L.N.; Santoso, R.S.; Nugraha, R.B. 2009.Monitoring Keberadaan Badak Sumatera (Dicerorhinus sumatrensis) bersama Unit Proteksi Badak Di Taman Nasional Bukit Barisan Selatan.Bogor, Departemen Konservasi Sumberdaya Hutan dan Ekowisata Fakultas Kehutanan Institut Pertanian Bogor: pp. 1-10.