I. Igbozuruike, C. “Telfairia Occidentalis Leaf Concentrations of Hg, Pb and Cd Planted in Old Sewage Sludge Dumpsites in Owerri Imo State”. International Journal of Life Science and Agriculture Research, vol. 2, no. 8, Aug. 2023, pp. 248-51, doi:10.55677/ijlsar/V02I08Y2023-07.