“GEOPHYSICAL INVESTIGATION OF GROUNDWATER CONTAMINATION USING DC RESISTIVITY TECHNIQUE AT THE MALE HOSTEL OF ISA KAITA COLLEGE OF EDUCATION DUTSIN-MA, KATSINA STATE, NIGERIA” (2021) FUDMA JOURNAL OF SCIENCES, 4(4), pp. 547–560. doi:10.33003/fjs-2020-0404-643.