Ali, Fatih Akram, and Bayan Ali Hussein. “Effect Zone Analysis of Educational Services in the City of Darbandikhan for the Year (2021-2022) : ”. Halabja University Journal 7, no. 4 (December 30, 2022): 169–190. Accessed October 14, 2024. https://huj.uoh.edu.iq/index.php/HUJ/article/view/huj-10438.