หลงทะเล ส. A STUDY OF PROMOTION GUIDELINES INTERNAL QUALITY ASSURANCE OF EDUCATION INSTITUTION IN THE OPERATION OF TEACHERS UNDER THE SECONDARY EDUCATIONAL SERVICE AREA OFFICE 31. Ph.D. in Soc. Sci. J. [Internet]. 2018 Mar. 29 [cited 2024 Apr. 20];8(1):135-49. Available from: https://so05.tci-thaijo.org/index.php/phdssj/article/view/89070