A. Bilal, A., A. Al-Tamir, M. and A. Said, M. 2007. Evaluation of Wady ‘Eqab Wastewater Effluent and its Effect upon Tigris River. Al-Rafidain Engineering Journal (AREJ). 15, 1 (Mar. 2007), 46–60. DOI:https://doi.org/10.33899/rengj.2007.44940.