Hayitmuradov Sherzod Sagdullayevich, Habibulloyev Doniyor Sadulloyevich. CONDITIONS FOR EFFECTIVE IMPLEMENTATION OF LEVEL STRUCTURE IN SECONDARY SCHOOLS. JournalNX [Internet]. 2021Apr.15 [cited 2025Jan.10];:760-2. Available from: https://repo.journalnx.com/index.php/nx/article/view/3048