T. Razzak Al- Husseini, “ESTIMATION OF MANNING’S ROUGHNESS COEFFICIENT FOR AL-DIWANIYA RIVER”, J. eng. sustain. dev., vol. 19, no. 4, pp. 170–184, Jul. 2015, Accessed: Apr. 20, 2025. [Online]. Available: https://jeasd.uomustansiriyah.edu.iq/index.php/jeasd/article/view/750