Saleh Al-Attar, Tareq, Basil Salah Mehdi, and Mohammed Frayyeh Hattab. 2019. “EFFECT OF EXTERNAL SULPHATES ON PROPERTIES OF LIME-POZOLANA CONCRETE”. Journal of Engineering and Sustainable Development 23 (5): 42-54. https://jeasd.uomustansiriyah.edu.iq/index.php/jeasd/article/view/203.