romsri C, Romsri J. Problems in Learning Management and Administration according to the Sufficiency Economy Philosophy of Educational Institutions under Roi-Et Primary Educational Service Area Office 1. JDSC [internet]. 2021 Aug. 23 [cited 2026 Oct. 1];8(2):155-68. available from: https://so03.tci-thaijo.org/index.php/rdirmu/article/view/251215