Oesman, Nastiti Maharani, and Sugito Sugito. “PENURUNAN LOGAM BESI DAN MANGAN MENGGUNAKAN FILTRASI MEDIA ZEOLIT DAN MANGANESE GREENSAND”. WAKTU: Jurnal Teknik UNIPA 15, no. 2 (July 22, 2017): 57–69. Accessed January 13, 2025. https://jurnal.unipasby.ac.id/index.php/waktu/article/view/732.