Islamic frontiers and their impact during the first Abbasid era (132 AH - 227 AH | 750 AD - 842 AD). Journal of the College of Basic Education, [S. l.], v. 29, n. 118, p. 743–724, 2023. DOI: 10.35950/cbej.v29i118.10139. Disponível em: https://cbej.uomustansiriyah.edu.iq/index.php/cbej/article/view/10139.. Acesso em: 21 apr. 2025.