Abbas, Said Hi, and Firman Firman. “ANALISIS POTENSI LOGAM TANAH JARANG ABU BATUBARA LIMBAH PLTU MULUT TAMBANG PT. WANATIARA PERSADA KAWASI OBI”. Journal Of Science and Engineering 3, no. 2 (October 30, 2020). Accessed June 7, 2026. https://ejournal.unkhair.ac.id/index.php/josae/article/view/2424.