Wilson Chukwuemeka, Ofoegbu, and Efeh, Valentine Omorse. “Lean Production and Operational Performance of Manufacturing Firms in Rivers State”. GPH-International Journal of Social Science and Humanities Research 5, no. 12 (January 9, 2023): 30-43. Accessed May 7, 2024. https://gphjournal.org/index.php/ssh/article/view/771.