Udebuani A, Okoli C, Nwigwe H, Ozoh P. Effects of spent engine oil pollution on arable soil of Nekede Mechanic Village Owerri, Nigeria. IJONAS [Internet]. 2013 Mar. 14 [cited 2026 Sep. 19];7(3):257 -. Available from: https://www.ajol.info/index.php/ijonas/article/view/86511