Hardiyanti O, Nurmanina A. Analysis of The Utilization of the Social Center for Orangutan Protection (COP) In Kalimantan in Orangutan Saving Efforts: Analisis Pemanfaatan Jaringan Sosial Centre for Orangutan Protection (COP) di Kalimantan Dalam Upaya Penyelamatan Orangutan. progre. in. soc. devel. [Internet]. 2020Jan.2 [cited 2024May16];1(1):9-17. Available from: https://psd.fisip-unmul.ac.id/index.php/psd/article/view/14