รู้ยืนยง ว, มุขธระโกษา ส. THE STRATEGIES FOR SCHOOL ADMINISTRATION BY APPLYING THE CONCEPTS OF PROFESSIONAL ADMINISTRATOR UNDER THE OFFICE OF SECONDARY EDUCATIONAL SERVICE AREA 25. JMND [Internet]. 2019 Nov. 28 [cited 2024 Apr. 26];6(9):4613-26. Available from: https://so03.tci-thaijo.org/index.php/JMND/article/view/203983