Manjurhussain, Bhatt Khushbu, and N.B.Parmar. 2017. “USE OF GROUND NUT SHELL ASH AND COAL ASH TO MODIFY THE PROPERTIES OF SOIL”. International Journal of Advance Engineering and Research Development (IJAERD) 4 (5):1012-17. https://ijaerd.org/index.php/IJAERD/article/view/4897.