THE EFFECT OF BALLS SHAPES AND SPACING ON STRUCTURAL BEHAVIOUR OF REINFORCED CONCRETE BUBBLED SLABS. Journal of Engineering and Sustainable Development, [S. l.], v. 23, n. 2, p. 56–65, 2019. Disponível em: https://jeasd.uomustansiriyah.edu.iq/index.php/jeasd/article/view/276.. Acesso em: 29 apr. 2024.