The Role of Language Proficiency in Effective Educational Management and Curriculum Implementation in Nigerian Polytechnics. International Journal of Management, Policy and Administrative Studies (IJMPAS), [S. l.], v. 1, n. 5, p. 77–85, 2026. Disponível em: https://ijmpas.com/journal/article/view/85.. Acesso em: 30 oct. 2026.