BichiA. A., ButuA. W., and GadanyaM. A. 2023. “AN ANALYSIS OF SAFETY LEVEL OF METAL CONTAMINANTS IN RIVER HADEJIA CATCHMENT, KANO REGION, NIGERIA”. FUDMA JOURNAL OF SCIENCES 2 (2), 176 -83. https://fjs.fudutsinma.edu.ng/index.php/fjs/article/view/1364.