ULLOA BRENES, G. Reflections on the historical evolution of the concept of distance education. Innovaciones Educativas, [S. l.], v. 23, n. 34, p. 42–51, 2021. DOI: 10.22458/ie.v23i34.3364. Disponível em: https://revistas.uned.ac.cr/index.php/innovaciones/article/view/3364. Acesso em: 23 nov. 2024.