Butsuwan W, Jantarak S, Phengsawat W. EFFECTIVE MANAGEMENT STRATEGY OF EDUCATIONAL OPPORTUNITY SCHOOL EXTENSION IN KALASIN PROVINCE. JSC [internet]. 2026 May 25 [cited 2026 Sep. 12];10(5):137-54. available from: https://so06.tci-thaijo.org/index.php/JSC/article/view/293790