1. Dynamics of Fluids in Porous Media;Bear,1972
2. Hydrogeology;Davis,1966
3. Analysis of the groundwater resources of Nsukka area and the environs;Egboka;Niger. J. Min. Geol.,1983
4. The hydrogeochemistry, contaminant transport and tectonic effects in Okposi-Uburu salt lake areas of Imo State;Egboka;Nigeria. Hydrol. Sci. J.,1984
5. Theory of aquifer tests;Ferris;U.S. Geol. Surv., Water-Supply Pap. No. 1936-E,1962