Abong, A. A., and J. U. Atsu. “Evaluation of Concentration of Some Groundwater Parameters Around a Major Refuse Dumpsite in Cross River State, Southeastern Nigeria”. Journal of Applied Sciences and Environmental Management 26, no. 3 (June 13, 2022): 525–531. Accessed September 24, 2026. https://www.ajol.info/index.php/jasem/article/view/226701.