Ogwah, C, and MO Eyankware. “Hydrogeochemical Processes in Groundwater Resources Located Around Abandoned Okpara Coal, Enugu SE. Nigeria”. Bangladesh Journal of Scientific and Industrial Research 55, no. 4 (December 27, 2020): 245–252. Accessed November 24, 2024. https://banglajol.info/index.php/BJSIR/article/view/50960.