Jabbar Hamid Ahmed A, عبدالجبار. The educational and service apparatus in the schools of Iraq in the Abbasid era. RADAB [Internet]. 2025 Jun. 24 [cited 2025 Aug. 6];31(34):152-94. Available from: https://ojs.uomosul.edu.iq/index.php/radab/article/view/1632