A. Al-Delewy, A.-H. ., K. Al-Shukur, A.-H. ., & Z. M. Al-Qaisi, A. . (2008). Optimum Safe Hydraulic Design of Culverts. Journal of Engineering and Sustainable Development, 12(1), 66-88. https://jeasd.uomustansiriyah.edu.iq/index.php/jeasd/article/view/1637