Saifaddin, A.A.M. 2020. The Transformation of Northern Arbitah in the Abbasid Era from Military Bases into Learning Centers Prof. Abdulhakim Abdulhk Mohammed Saifaddin. Journal of Arts. 1, 14 (Mar. 2020), 7–64. DOI:https://doi.org/10.35696/.v1i14.638.