Udebuani, A., Okoli, C., Nwigwe, H. and Ozoh, P. 2013. Effects of spent engine oil pollution on arable soil of Nekede Mechanic Village Owerri, Nigeria. International Journal of Natural and Applied Sciences. 7, 3 (Mar. 2013), 257 –. DOI:https://doi.org/10.4314/ijonas.v7i3.