“ASSESSMENT OF EFFECT OF SANDMINING ACTIVITIES ON PHYSICOCHEMICAL PROPERTIES AND METAL CONCENTRATIONS OF SURFACE WATER OF WARRI RIVER, NIGER DELTA, NIGERIA”. FUDMA JOURNAL OF SCIENCES 3, no. 1 (March 30, 2023): 72–83. Accessed September 17, 2025. http://162.254.38.185/index.php/fjs/article/view/1429.