Paengkamta, N., Boonsed, P. , Jongmeesuk, T. , Ubollert , R. and phutthipongchaicharn, T. 2021. Efficiency of Service to People Ban Chan Subdistrict Administrative Organization Phutthaisong District Buriram Province. Interdisciplinary Academic and Research Journal . 1, 4 (Aug. 2021), 1–12. DOI:https://doi.org/10.14456/iarj.2021.16.