Sani, S., Lawal, A. M., Nalado, A.M., Idris, Z.M. and Nasiru, Y. 2015. Determination of Heavy Metals Concentration in Some Fish Samples from River Rima (Kwalkwalawa) in Sokoto State, Nigeria. International Journal of Science for Global Sustainability. 1, 1 (Dec. 2015), 8.