Otutu Oseji, Julius, and James Chucks Egbai. “ELECTRICAL RESISTIVITY SURVEY FOR GROUNDWATER POTENTIAL AND ESTIMATION OF CLAY DEPOSIT IN ARAGBA-OKPE, OKPE LOCAL GOVERNMENT AREA, DELTA STATE NIGERIA”. Scientific Journal of Polonia University 31, no. 6 (December 20, 2018): 52-66. Accessed May 6, 2024. http://pnap.ap.edu.pl/index.php/pnap/article/view/309.