SimonJ., IbrahimY. V., and BelloS. 2023. “EVALUATION OF RADIATION SHIELDING INTEGRITY OF FABRICATED CONCRETE WITH SOME SELECTED AGGREGATE SIZES ”. FUDMA JOURNAL OF SCIENCES 3 (2), 343 -46. https://fjs.fudutsinma.edu.ng/index.php/fjs/article/view/1525.