“Groundwater Quality Determination from Hand-Dug Wells in Ososo Town, Akoko-Edo North Local Government Area Edo State”, NIJOTECH, vol. 40, no. 3, pp. 540–549, Jun. 2021, Accessed: Apr. 28, 2026. [Online]. Available: https://www.nijotech.com/index.php/nijotech/article/view/2680