Sitthisuntikul K, Kaewthip S, Kavichai P, Pattanapaiwan S, Ongla O. Gap Analysis of Key Development Issues for Sustainable Development in Northern Thailand. TU Journal [internet]. 2024 Aug. 28 [cited 2025 Dec. 11];43(2):133-51. available from: https://so05.tci-thaijo.org/index.php/tujo/article/view/275231