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2. The geochemistry of the Igbeti granite complex, Oyo State, Nigeria;Emofurieta,1984
3. Electromagnetic prospecting for groundwater in Precambrian terrains in the Republic of Upper Volta;Palacky;Geophys. Prospect.,1981
4. Principles of Applied Geophysics;Parasnis,1986
5. Very low frequency electromagnetic mapping of strata — bound mineralization near Aberfeldy, Scotland;Parker;Trans. Inst. Min. Met.,1980