Usman Sani, B. G. Muhammad, D. S. Joseph, and D. Z. Joseph. “EVALUATION OF OCCUPATIONAL RADIATION EXPOSURE IN A RADIO-DIAGNOSTIC FACILITY IN KATSINA- NIGERIA”. FUDMA JOURNAL OF SCIENCES, Vol. 4, no. 2, Oct. 2020, pp. 722 -9, doi:10.33003/fjs-2020-0402-406.