“GEOPHYSICAL INVESTIGATION OF GROUNDWATER CONTAMINATION USING DC RESISTIVITY TECHNIQUE AT THE MALE HOSTEL OF ISA KAITA COLLEGE OF EDUCATION DUTSIN-MA, KATSINA STATE, NIGERIA”. FUDMA JOURNAL OF SCIENCES 4, no. 4 (July 13, 2021): 547–560. Accessed September 17, 2025. http://162.254.38.185/index.php/fjs/article/view/643.