Halilu, Maimuna. 2017. “Efficacy of Stream Sediment Survey in Delineating Geochemical Halos: A Case Study of Well and Non-Shed Areas in the Gambe-Tola Baryte District, Northeastern Nigeria”. IJRDO-Journal of Applied Science 3 (8), 152-57. https://doi.org/10.53555/as.v3i8.1350.