Fagbenro, O., and B. Oyibo. “INVESTIGATION OF THE POLLUTION LEVEL IN RIVER OOKUN DUE TO DISCHARGE OF SOAP EFFLUENTS”. LAUTECH Journal of Engineering and Technology 4, no. 2 (August 1, 2007): 87-91. Accessed May 21, 2022. http://laujet.com/index.php/laujet/article/view/174.