“ENVIRONMENTAL IMPACT ASSESSMENT OF HEAVY METALS EFFLUIENT (CHROMIUM & NICKEL) RELEASED INTO ROMI RIVER, KADUNA STATE: A CASE STUDY ”. FUDMA JOURNAL OF SCIENCES 4, no. 3 (September 30, 2020): 704–707. Accessed September 17, 2025. http://162.254.38.185/index.php/fjs/article/view/283.