Khaldoun Rahal and Yazzan Alrefaei และ -. (2015) The Shear Strength of 50 MPa Concrete Beams Made using Recycled Concrete Coarse Aggregates. ISEC Press:ม.ป.ท.Khaldoun Rahal and Yazzan Alrefaei และ -. 2015. The Shear Strength of 50 MPa Concrete Beams Made using Recycled Concrete Coarse Aggregates. ม.ป.ท.:ISEC Press;Khaldoun Rahal and Yazzan Alrefaei และ -. The Shear Strength of 50 MPa Concrete Beams Made using Recycled Concrete Coarse Aggregates. ม.ป.ท.:ISEC Press, 2015. Print.