USE OF GROUND NUT SHELL ASH AND COAL ASH TO MODIFY THE PROPERTIES OF SOIL. International Journal of Advance Engineering and Research Development (IJAERD), [S. l.], v. 4, n. 5, p. 1012–1017, 2017. Disponível em: https://ijaerd.org/index.php/IJAERD/article/view/4897. Acesso em: 8 sep. 2025.