.ltaief, mohamed (2026) “ Concentration and Coherence of the Field in the Islamic State of the Caliphate from the Foundation to the End of the Umayyad Era(11-132 A.H) ”, The Algerian Historical Journal, 6(01), pp. 157–168. Available at: https://journals.univ-msila.dz/index.php/AHJ/article/view/9342 (Accessed: 13 May 2026).