Behavior Of Individual Orangutan Sumatera (Pongo Abelii) Before Direintroduction At The Orangutan Quarantine Station, Sibolangit, Deli Serdang, North Sumatera. Int J Ecophysiol 2020, 2 (02), 101-111. https://doi.org/10.32734/ijoep.v2i02.4677.