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เลิศไธสง ม. THE DEVELOPMENT OF TRAINING PROGRAM AND TEACHING ENGLISH FOR SECOND KEY STAGE TEACHERS IN NAKHON RATCHASIMA. AJPU [internet]. 2018 Aug. 10 [cited 2025 Jan. 19];9(2):242-55. available from: https://so01.tci-thaijo.org/index.php/AJPU/article/view/133596