UMAROVA GULSHOD ABDUJABBAROVNA. IMPROVING THE EFFECTIVENESS OF DISTANCE EDUCATION. International Engineering Journal For Research & Development, [S. l.], v. 6, n. ISPCIEI, p. 4, 2021. DOI: 10.17605/OSF.IO/ANC3X. Disponível em: http://www.iejrd.com/index.php/iejrd/article/view/2170. Acesso em: 23 apr. 2026.