RAUF, Nawzad Khalid. History Petroleum and Bitumen and Their Uses by Muslims in The Abbasid Age (132-656 AH / 749-1258 AD). Journal of University of Raparin, [S. l.], v. 8, n. 4, p. 542–571, 2021. DOI: 10.26750/Vol(8).No(4).Paper24. Disponível em: https://journal.uor.edu.krd/index.php/JUR/article/view/676. Acesso em: 7 may. 2024.