A. Bilal, A., M. A. Al-Tamir, and M. A. Said. “Evaluation of Wady ‘Eqab Wastewater Effluent and Its Effect Upon Tigris River”. Al-Rafidain Engineering Journal (AREJ), vol. 15, no. 1, Mar. 2007, pp. 46-60, doi:10.33899/rengj.2007.44940.