Olivianti, Asriani, Jemmy Abidjulu, and Harry Koleangan. “DAMPAK LIMBAH PETERNAKAN AYAM TERHADAP KUALITAS AIR SUNGAI SAWANGAN DI DESA SAWANGAN KECAMATAN TOMBULU KABUPATEN MINAHASA”. CHEMISTRY PROGRESS 9, no. 2 (December 13, 2019). Accessed July 18, 2024. https://ejournal.unsrat.ac.id/v3/index.php/chemprog/article/view/27986.