Syed Hissan, Muhammad Umar, Muhammad Irshad Khan, and Muhammad Tahir Khan. 2018. “EFFECT OF RICE HUSK ASH (RHA) AS A PARTIAL REPLACEMENT OF CEMENT IN CONCRETE AND MORTAR”. International Journal of Advance Engineering and Research Development (IJAERD) 5 (6):493-97. https://www.ijaerd.org/index.php/IJAERD/article/view/3695.