Sattar Aldabagh, Dr.Abdul, Entesar M.Ghazal, and Ali M.Yaseen. “A Study of Factors Affecting Drain Spacing Calculated With Different Methods”. Al-Rafidain Engineering Journal (AREJ) 19, no. 4 (August 28, 2011): 63–77. Accessed August 7, 2025. https://ojs.uomosul.edu.iq/index.php/arej/article/view/27200.