Phookiaw J, Rojanatrakul T. Efficiency of the Noncommissioned Officers’ Operation under the Military Canton 39 in Phitsanulok. jomld [internet]. 2021 May 10 [cited 2026 Aug. 28];6(3):224-36. available from: https://so06.tci-thaijo.org/index.php/jomld/article/view/247945