Ukpebor, E E, P O Oviasogie, and C A Unuigbe. “?THE DISTRIBUTION OF Mn, Zn, Cu, Cr, Ni, AND Pb AROUND TWO MAJOR REFUSE DUMPSITES IN BENIN CITY, NIGERIA”. Biological Sciences - PJSIR 46, no. 6 (December 22, 2003): 418–423. Accessed May 18, 2024. https://v2.pjsir.org/index.php/biological-sciences/article/view/1692.