Pratama, H., Nursanto, E., Ernawati, R. and Giatman, M. (2022) “Adsorption of Heavy Metals Fe and Mn in Acid Mine Drainage from Coal Mining Waste Using Calcium Oxide and Fly Ash”, INVOTEK: Jurnal Inovasi Vokasional dan Teknologi, 22(2), pp. 107–116. doi: 10.24036/invotek.v22i2.1020.