Onyejekwe, I. M., L. C. Osuji, and E. O. Nwaichi. “Accumulation of Heavy Metals in the Seeds of Zea Mays L. From Crude Oil Impacted Soils in Kom-Kom, Rivers State, Nigeria”. Journal of Scientific Research and Reports 25, no. 3-4 (October 31, 2019): 1-8. Accessed November 18, 2019. http://journaljsrr.com/index.php/JSRR/article/view/30182.