Sissakian, Varoujan K., Ahmed T. Shihab, and Arsalan A. Othman. 2017. “Factors Controlling the Development of Straight Valleys and Streams in the Kurdistan Region, North and Northeast of Iraq”. ARO-THE SCIENTIFIC JOURNAL OF KOYA UNIVERSITY 5 (2), 32-48. https://doi.org/10.14500/aro.10262.