kasetiam, vikanda ., Sriwongwanna, J. . and Piyaratmanon, . W. . (2020) “A pilot project to environmental-friendly lodging and accommodation in Ubon Ratchathani Province”, Journal of Research and Development Institute Rajabhat Maha Sarakham University, 7(2), pp. 307–324. Available at: https://so03.tci-thaijo.org/index.php/rdirmu/article/view/226926 (Accessed: 8 May 2024).