“Determination of Elastic Moduli and Geotechnical Parameters of the Upper Soil Layer Using Ultrasonic Waves in Al- Jadiriyah Area - University of Baghdad-Iraq”. Iraqi Journal of Science 57, no. 4C (January 30, 2022): 2909–2921. Accessed November 22, 2024. https://ijs.uobaghdad.edu.iq/index.php/eijs/article/view/6278.