“TREATMENT COAGULANT AID DAN FILTRASI MANGANESE GREENSAND DALAM MENURUNKAN KADAR MANGAN DAN KLORIDA”. WAKTU: Jurnal Teknik UNIPA 17, no. 2 (July 9, 2019): 37–44. Accessed June 4, 2026. https://jurnal.unipasby.ac.id/waktu/article/view/2135.