Sirirungrueangkrai L. LEADERSHIP COMPETENCIES OF MAYOR AFFECTING THE ADMINISTRATION EFFECTIVENESS OF SUBDISTRICT MUNICIPALITIES IN CHAIYAPHUM PROVINCE. JMND [internet]. 2022 Aug. 31 [cited 2026 Sep. 11];9(8):414-29. available from: https://so03.tci-thaijo.org/index.php/JMND/article/view/263423