Mhanna AH. The reality of professional development for public school teachers in Lebanon and its obstacles from the perspective of a sample of principals: Teacher training in the Beirut Governorate as a model. JEPS [Internet]. 2025 Jun. 30 [cited 2025 Dec. 19];9(7 (ملحق):23-40. Available from: https://www.ajsrp.ojsexpert.com/index.php/jeps/article/view/8985