ASSESSMENT OF EFFECT OF SANDMINING ACTIVITIES ON PHYSICOCHEMICAL PROPERTIES AND METAL CONCENTRATIONS OF SURFACE WATER OF WARRI RIVER, NIGER DELTA, NIGERIA. FJS [Internet]. 2023 Mar. 30 [cited 2025 Sep. 17];3(1):72-83. Available from: http://162.254.38.185/index.php/fjs/article/view/1429