Hierarchy of Positions and Human Structure in the Ayyubid navy (570-652 AH / 1174-1254 AD). JSHA [Internet]. 2022 Dec. 24 [cited 2024 May 20];(81):444-85. Available from: https://jcoart.uobaghdad.edu.iq/index.php/2075-3047/article/view/318