P.M.Shanmugavadivu, R.Malathy, Malaiappan Sindhu,Habtamu eskezia, Alemayehu Feyissa Gerba, Yohannes Gudeta. 2020. “The Effect of Manufactured Sand in Concrete”. International Journal of Advanced Science and Technology 29 (7), 4809-20. http://sersc.org/journals/index.php/IJAST/article/view/23372.