Ukpebor, E.E., Oviasogie, P.O. and Unuigbe, C.A. 2003. ?THE DISTRIBUTION OF Mn, Zn, Cu, Cr, Ni, AND Pb AROUND TWO MAJOR REFUSE DUMPSITES IN BENIN CITY, NIGERIA. Biological Sciences - PJSIR. 46, 6 (Dec. 2003), 418–423.