ShaibuI., OvwasaM. O., and MisbahuA. “EVALUATION OF THE SUBSURFACE STRUCTURES IN PART OF FEDERAL UNIVERSITY OF GUSAU CAMPUS , ZAMFARA STATE, NIGERIA”. FUDMA JOURNAL OF SCIENCES, Vol. 6, no. 1, Apr. 2022, pp. 338 -50, doi:10.33003/fjs-2022-0601-906.