Garba, Akan, & J. C. (2014). Spatial Distribution of the Heavy Metals: Ni, Fe, Cr, and Mn in Roadside Soils of Maiduguri Metropolis, Borno State Nigeria. Global Journal of Science Frontier Research, 14(H1), 1–5. Retrieved from https://journalofscience.org/index.php/GJSFR/article/view/1275