[1]
E. E. Ukpebor, 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”, Pakistan Journal of Scientific & Industrial Research, vol. 46, no. 6, pp. 418–423, Dec. 2003.