“The Suitability of Using Environmental Waste (Polystyrene Foam, Sawdust and Eggshells) for Developing a Hybrid Composite for Ceiling Boards” (2022) Nigerian Journal of Technology, 41(1), pp. 65–76. Available at: https://nijotech.com/index.php/nijotech/article/view/2806 (Accessed: 12 May 2026).