Sani, A., Ahmed Rufai Usman, and M. Sani. “Assessment of Nickel and Arsenic Poisoning and Estimation of Cancer Risk from Kaolin Mining Sites in Dutsin-Ma and Kankara, Katsina State”. UMYU Scientifica, vol. 1, no. 2, Dec. 2022, pp. 115-22, doi:10.56919/usci.1222.015.