Darweesh, H. H. M., Amal Hanafy Abdel-kader, and M. G. El-Meligy. 2013. “Utilization of Pulp Black Liquor Waste As a Cement Admixture”. International Journal of Basic and Applied Sciences 2 (3): 230-38. https://doi.org/10.14419/ijbas.v2i3.922.