Al-Eqabi , Haqi H. Abbood, and Ali M. Hassan Al-Gharbawe. “Effect of Coarse Aggregate Columns on Angle of Friction in Fine Sandy Soil”. Wasit Journal of Engineering Sciences, vol. 7, no. 2, Aug. 2019, pp. 55-61, https://doi.org/10.31185/ejuow.Vol7.Iss2.143.