Al-Safawi A, عبد, Al-Assaf A, ازهار. Environmental and biological study of the effluents of the Danafi Valley and its impact on the water quality of the Tigris River in the city of Mosul, Iraq. EDUSJ [Internet]. 2014 Mar. 1 [cited 2025 Aug. 4];27(1):71-89. Available from: https://rjps.uomosul.edu.iq/index.php/edusj/article/view/17310