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