Blackboard-Powered TVET Delivery in Southeast Nigeria: Evaluating LMS Adoption in Federal Polytechnics. FedPoly Oko Journal of Business and Management Studies (OJBMS), [S. l.], v. 1, n. 2, p. 1001–1020, 2026. Disponível em: https://ojbms.com/journal/article/view/70.. Acesso em: 7 sep. 2026.