Somrit S. A DEVELOPMENT OF LEARNING CENTER MANAGEMENT STRATEGIES USING PHILOSOPHY OF SUFFICIENCY ECONOMY BASED IN PHIANGLUANG 16 SCHOOL UNDER CHIANG RAI PRIMARY EDUCATIONAL SERVICE AREA OFFICE 4. JSBA [internet]. 2022 Oct. 31 [cited 2026 Apr. 22];7(10):38-5. available from: https://so04.tci-thaijo.org/index.php/JSBA/article/view/261054