47 PENYEBARAN DAN KELIMPAHAN POPULASI MONYET EKOR PANJANG (Macaca fascicularis) DI CAGAR ALAM SIBOLANGIT (DISTRIBUTION OF POPULATION AND ABUNDANCE OF LONG-TAILED MACAQUE (Macaca fascicularis) IN SIBOLANGIT NATURE RESERVES) Rio Pranata Sembiring, Agus Seti
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