Sodamade, G. A., E.O. Longe, A. Sangodoyin, and K.O. Aiyesimoju. 2018. “Removal of Escherichia Coli and Other Contaminants in Wastewater Using Intermittent Sand Filtration”. Journal of Engineering Research 23 (1), 83-89. http://jer.unilag.edu.ng/article/view/971.