“INVESTIGATION OF THE VARIATION IN ELECTRICAL RESISTIVITY VALUES OF EARTH MATERIALS WITH DEPTH AT NARAYI AREA OF KADUNA STATE, NIGERIA” (2020) FUDMA JOURNAL OF SCIENCES, 4(1), pp. 321–332. Available at: http://162.254.38.185/index.php/fjs/article/view/51 (Accessed: 17 September 2025).