HAYITMURADOV SHERZOD SAGDULLAYEVICH; HABIBULLOYEV DONIYOR SADULLOYEVICH. CONDITIONS FOR EFFECTIVE IMPLEMENTATION OF LEVEL STRUCTURE IN SECONDARY SCHOOLS. JournalNX - A Multidisciplinary Peer Reviewed Journal, [S. l.], p. 760–762, 2021. Disponível em: https://repo.journalnx.com/index.php/nx/article/view/3048. Acesso em: 10 jan. 2025.