Krajangchom, S. ., Sangkakorn, . K., & Poonsukcharoen, N. (2021). The Adaptation Strategy of Tourism in Upper North of Thailand under the COVID-19 Pandemic. University of the Thai Chamber of Commerce Journal Humanities and Social Sciences, 41(1), 1–20. Retrieved from https://so06.tci-thaijo.org/index.php/utccjournalhs/article/view/243464