GEOPHYSICAL INVESTIGATION OF GROUNDWATER CONTAMINATION USING DC RESISTIVITY TECHNIQUE AT THE MALE HOSTEL OF ISA KAITA COLLEGE OF EDUCATION DUTSIN-MA, KATSINA STATE, NIGERIA. FJS [Internet]. 2021 Jul. 13 [cited 2025 Sep. 17];4(4):547-60. Available from: http://162.254.38.185/index.php/fjs/article/view/643