1. Sediments of the fluvial Bida sandstone (Cretaceous), Nigeria;Adeleye;Sediment. Geol.,1974
2. The Hydrogeology of the Area (Nanka Sand) South of the Upper Sector of the Idemili Drainage Basin;Akujieze,1984
3. A laboratory investigation into the effect of water content on the CBR of a subgrade soil. Experimental unsaturated soil mechanics;Ampadu,2007
4. Geochemistry, Groundwater and Pollution;Appelo,1999
5. American society for testing and materials;ASTM,1982