MAMATQULOVA, Shoxsanam. EFFECTIVENESS OF THE “MANAGEMENT CERTIFICATE” SYSTEM IN THE PROFESSIONAL DEVELOPMENT OF PRE-SCHOOL EDUCATION SYSTEM LEADERS AND MECHANISMS FOR ITS IMPROVEMENT. Innovation Science and Technology, [S. l.], v. 2, n. 2, 2026. DOI: 10.5281/zenodo.18623439. Disponível em: https://ist-journal.uz/index.php/IST/article/view/583. Acesso em: 26 may. 2026.