EMCHENEO, E. A. THE QUESTION OF EFFICIENCY OF TEACHING Lecture. Scientific look into the future, [S. l.], v. 2, n. 13-02, p. 72–77, 2019. DOI: 10.30888/2415-7538.2019-13-02-035. Disponível em: https://scilook.eu/index.php/slif/article/view/slif13-02-035. Acesso em: 22 jul. 2024.