Nugraha , C. ., Sukandar , S. ., & Pratama , Y. . (2022). Characterization Study of Coal-Combustion Ash For Acid Mine Drainage Prevention . INTERNATIONAL CONFERENCE ON GREEN TECHNOLOGY AND DESIGN (ICGTD), 2020, 61–66. Retrieved from https://eproceeding.itenas.ac.id/index.php/icgtd/article/view/106