Ali N, Salahaldin A, Hamza A. Impact Analysis of Reinforced Concrete Columns with Side Openings Subjected to Eccentric Axial Loads. Eng. J. [انترنت]. 12015 [وثق 212019];21(2):1-9. Available from: http://joe.uobaghdad.edu.iq/index.php/main/article/view/462