N. . Nazir Murad, H. . Sawadi Najeeban, and W. Hammoud hashoosh Al-fatlawi, “The foundations of the generalization of landmarks on the topographic maps of Thi Qar Governorate”, eduj, vol. 2, no. 41, pp. 425–452, Nov. 2020, doi: 10.31185/eduj.Vol2.Iss41.1830.