“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: https://fjs.fudutsinma.edu.ng/index.php/fjs/article/view/51 (Accessed: 11 September 2025).