Kadhum Al-saraj , Wissam. “Flaw Evaluation in Reinforced Concrete Slabs Using Impact Acoustics Method”. Journal of Engineering and Sustainable Development 18, no. 6 (November 1, 2014): 77–87. Accessed July 4, 2025. https://jeasd.uomustansiriyah.edu.iq/index.php/jeasd/article/view/877.