สุขสำราญ ส. STUDY OF RELATIONSHIP BETWEEN LEARNING ORGANIZATION AND 21st CENTURY SKILLS OF SCHOOLS UNDER THE SECONDARY EDUCATIONAL SERVICE AREA OFFICE 31. Ph.D. in Soc. Sci. J. [internet]. 2018 Aug. 31 [cited 2026 Aug. 30];8(2):116-31. available from: https://so05.tci-thaijo.org/index.php/phdssj/article/view/89203