UMEH , Adaobi Nkeiruka; EZEAGU, Obinna Chukwudi. GLOBAL MANAGERIAL ISSUES AND THEIR EFFECT ON OPERATIONAL PERFORMANCE IN SELECTED FAST-FOOD FIRMS IN ABIA STATE . International Journal of Contemporary Research in Marketing and Management Sciences, [S. l.], v. 12, n. 3, p. 1–26, 2024. DOI: 10.5281/zenodo.13847664. Disponível em: https://aydenjournals.com/index.php/IJCRMMS/article/view/867. Acesso em: 23 aug. 2025.