Jihan, Abboud, and أ.د إسحق صالح العكام. “Geomorphological Features in the Grda Sur Valley Basin in Erbil Province”. Journal of Education College Wasit University, vol. 51, no. 2, May 2023, pp. 115-34, https://doi.org/10.31185/eduj.Vol51.Iss2.2394.