Okolafor F. I , Ekhaise F. O 2021. Biostimulation of Motor Engine Oil Polluted Soils in Benin City, Nigeria Using Organic and Inorganic Amendments. NIPES - Journal of Science and Technology Research. 3, 3 (Aug. 2021). DOI:https://doi.org/10.37933/nipes/3.3.2021.23.