Srikoon S, Pisit P. Grounded Theory on the Strength of Curriculum Development Systemin Demonstration Secondary School, Khon Kaen University. Trends Humanit Soc Sci Res [internet]. 2024 Apr. 1 [cited 2026 Jan. 7];12(1):156-79. available from: https://so03.tci-thaijo.org/index.php/Humanties-up/article/view/270966