“Pengolahan Air Limbah Tambang Menggunakan Limbah Kulit Langsat: Penurunan Kadar Logam Total Fe Dan Mn”. Jurnal Geomine 12, no. 02 (January 7, 2026): 152–162. Accessed April 8, 2026. https://jurnal.fti.umi.ac.id/index.php/JG/article/view/1235.