M. Ja’afaru, O. Adeyemo, C. Okafor, and P. Bristone, “Effects of Abattoir Effluents on Heavy Metal Tolerance, Bacteriological Quality and Physicochemical Parameters of Contaminated Soil in Yola, Adamawa State, Nigeria”, Nig Ann pure App Sci, vol. 4, no. 1, pp. 8–21, Aug. 2021.