Keragaman Avifauna pada Lahan Bekas Tambang Emas PT Kelian Equatorial Mining, Kutai Barat Kalimantan Timur (Variety of Avifauna on Land Ex-Gold Mining PT Kelian Equatorial Mining West Kutai, East Kalimantan) - Boer, Chandra (Bogor Agricultural University, 2011)