Jeje, L., Ogunkpoya, O., & Oluwatimilehin, J. (2011). The Geochemical Properties of Rural Rivers: The case of River Oni in Efon Alaaye Area of Central Western Nigeria. Ife Research Publications in Geography, 10(1), 1–9. Retrieved from https://irpg.oauife.edu.ng/index.php/irpg/article/view/18