Phibunthannanan W, Podapol C. Administrative Work According to Sankhahavatthu 4 Principles of Educational Institute Administrators Under Loei Primary Educational Service Area Office 1: Administrative Work According to Sankhahavatthu 4 Principles of Educational Institute Administrators Under Loei Primary Educational Service Area Office 1. rtnb [internet]. 2024 Apr. 28 [cited 2025 May 31];6(1):561-74. available from: https://so07.tci-thaijo.org/index.php/rtnb/article/view/4498