Intaravichiern I, Wannathanung K. GUIDELINES FOR ENHANCING THE OPERATIONAL EFFICIENCY OF PERSONNEL AT THE REGIONAL GROUNDWATER RESOURCES OFFICES, DEPARTMENT OF GROUNDWATER RESOURCES. ว.สังคมพัฒนศาสตร์ [internet]. 2026 Aug. 31 [cited 2026 Sep. 2];9(8):292-307. available from: https://so07.tci-thaijo.org/index.php/JSSD/article/view/11809