THE ROLE AND IMPORTANCE OF THE IN-PROFESSIONAL TRAINING SYSTEM IN DEVELOPING THE PROFESSIONAL COMPETENCE OF DIRECTORS OF PRESCHOOL EDUCATIONAL INSTITUTIONS. Neo. Sci. Peer. Rev. Jour. [Internet]. 2025 Dec. 13 [cited 2025 Dec. 20];41:5-9. Available from: https://neojournals.com/index.php/nspj/article/view/544