Photiya ์, Sriputtarin S, Prasantree T. The Competency of School Administrators Affecting Teacher Development of Educational Opportunity Expansion Schools under Nakhon Phanom Primary Educational Service Area Office 2. J Roi Et [Internet]. 2021 Dec. 22 [cited 2024 May 5];15(3):114-2. Available from: https://so03.tci-thaijo.org/index.php/reru/article/view/242453