S. A. J. AL-Fadhel, M., & A. M. AL- Neaami, S. (2018). Obstacles of Gaining Sustainable Competitive Advantage A Case Study in Cement Factory in Hamam AL- Aliel AL-Jadeed, Ninavah Province. TANMIYAT AL-RAFIDAIN, 37(119), 481–499. https://doi.org/10.33899/tanra.2018.159442