Shaker, I. N., & Aziz, I. J. (2020). The Military Impact of the Fortresses and Fortresses on the Banks of the Euphrates in the Crusades between the Muslims and the Crusaders during the Sixth Century AH / Twelfth century AD. Journal of Tikrit University for Humanities, 27(8), 167–190. https://doi.org/10.25130/jtuh.27.8.2020.08