“Study of the Thermal Durability of Refractory Mortar Prepared from Local Clay Mixed With Different Percentage of Silica”. Iraqi Journal of Science 54, no. 4Appendix (January 26, 2024): 1096–1101. Accessed December 23, 2024. https://ijs.uobaghdad.edu.iq/index.php/eijs/article/view/12428.