D. F. Ogeleka, P. C. . Bokolo, and G. O. . Omoregie, “Assessment of the Phytotoxic Effects and Ecological Risks to Phaseolus vulgaris Planted on Crude Oil Spiked Soils ”, Tanz. J. Sci., vol. 46, no. 1, pp. 116 – 128, Mar. 2020.