Okpashi, VE, NE Etim, Inyang IH, and UN Obeten. 2021. “Effect Of Agitated Chicken-Droppings for in Situ Bioremediation of Pahs in Spend Engine-Oil Contaminated Soil”. Journal of Bio-Science 29 (July):1-9. https://doi.org/10.3329/jbs.v29i0.54817.