Sani, A., Ahmed Rufai Usman, & Sani, M. (2022). Assessment of Nickel and Arsenic Poisoning and Estimation of Cancer Risk from Kaolin Mining Sites in Dutsin-Ma and Kankara, Katsina State . UMYU Scientifica, 1(2), 115–122. https://doi.org/10.56919/usci.1222.015