Sabphaso N. Management of learning activities according to the Philosophy of Sufficiency Economy of Educational Institutions in the Office of Phayao Primary Educational Service Area 1. hss.nsru [Internet]. 2021 Dec. 30 [cited 2024 May 7];8(2):43-58. Available from: https://so05.tci-thaijo.org/index.php/hssnsru/article/view/253946