Assessment of Some Potentially Toxic Inorganic Contaminants in Soil of the Obi Coalfield, Middle Benue Trough, Nigeria (S. A. Adamu M.S , Mangs A.D , Lar U.A , Trans.). (2015). International Journal of Scientific Research and Management (IJSRM), 3(3). https://ijsrm.net/index.php/ijsrm/article/view/307