Rashid Abdulrahman, K., and F. Abdel-Baqi Khaled. “The Effect of Dust and Shadows on the Efficiency of Polycrystalline Solar Panel in Dohuk City -A Study in Applied Climate –”. Adab Al-Rafidayn, vol. 52, no. 89.1, Aug. 2022, pp. 701-2, doi:10.33899/radab.2022.175211.