Boodsamongkol P, Thummatasananon S. THE PROGRAM OF REINFORCED COMPETENCY LEARNING MANAGEMENT THROUGH THE PROJECT-BASED LEARNING (PBL) FOR TEACHERS UNDER THE SECONDARY EDUCATIONAL SERVICE AREA OFFICE MAHASARAKHAM. AJMBU [Internet]. 2022 Jun. 17 [cited 2024 May 4];11(2):378-90. Available from: https://so01.tci-thaijo.org/index.php/AJMBU/article/view/249457