Victor, E.I, I.C Louis, N.O Alfred, and U.N Ozioma. “Use of Chicken Eggshells As Fillers in Flexible Polyurethane Foam Production”. International Journal of Industrial Engineering 3, no. 1 (February 21, 2019): 1–6. Accessed February 5, 2026. https://gjpublications.com/index.php/IJIE/article/view/102.