DAVID ONWUCHEKWA PHD. PRODUCTION SCHEDULING AND MANUFACTURING EFFECTIVENESS OF SELECTED MANUFACTURING FIRMS IN PORT HARCOURT . BW Academic Journal, [S. l.], v. 2, p. 132–164, 2025. Disponível em: https://bwjournal.org/index.php/bsjournal/article/view/2780. Acesso em: 25 jun. 2026.