Wely F. IMPETUS Of The POLITICAL SPEECH And ELQEUNCE of The FIRST ABBASID ERA CALIPHS (Abu Ja’afir Al-Mansour and Al-Maa’amoon as a Model). ISJ [Internet]. 2023 Mar. 9 [cited 2024 May 18];10(4):329-52. Available from: https://jis.tu.edu.iq/index.php/jis/article/view/107