Ramadhan, Mgs. M. Fahmi, Restu Juniah, and Hartini Iskandar. 2018. “USED MINING PIT (VOID) LIMESTONE MINE IN PT. SEMEN BATURAJA (PERSERO) TBK FOR FRESHWATER AQUACULTURE PONDS.”. Indonesian Journal of Environmental Management and Sustainability 2 (4):124-31. https://doi.org/10.26554/ijems.2018.2.4.118-123.