Nwaedozie, G. “Evaluation of Accumulation Ability for Pb, Cr, Ni, and Mn in Native Plants Growing on a Contaminated Air Force Shooting Range, Kaduna”. Global Journal of Science Frontier Research 15, no. B5 (March 15, 2015): 9–12. Accessed May 5, 2024. https://journalofscience.org/index.php/GJSFR/article/view/1677.