“THE EFFECT OF BALLS SHAPES AND SPACING ON STRUCTURAL BEHAVIOUR OF REINFORCED CONCRETE BUBBLED SLABS” (2019) Journal of Engineering and Sustainable Development, 23(2), pp. 56–65. Available at: https://jeasd.uomustansiriyah.edu.iq/index.php/jeasd/article/view/276 (Accessed: 29 April 2024).