INVESTIGATION OF THE VARIATION IN ELECTRICAL RESISTIVITY VALUES OF EARTH MATERIALS WITH DEPTH AT NARAYI AREA OF KADUNA STATE, NIGERIA. FUDMA JOURNAL OF SCIENCES, [S. l.], v. 4, n. 1, p. 321–332, 2020. Disponível em: https://fjs.fudutsinma.edu.ng/index.php/fjs/article/view/51. Acesso em: 11 sep. 2025.