sida elnaeem Abdullah Musa س. ا. ع. ا. م. Espionage in the era of the Abbasid caliph al-Mansur and its impact on state security (136 AH, 754 AD - 158 AH, 775 AD). University of Sinnar Journal for Human Sciences, [S. l.], v. 2, n. 1, 2021. Disponível em: http://ojs.uofs.edu.sd/index.php/SiOJSHS/article/view/20. Acesso em: 23 nov. 2024.