Wongwattana U. Uttaradit “Laos”: A Stream-descending Ethnic and Ethnic Cultural Tourism: Uttaradit “Laos”: A Stream-descending Ethnic and Ethnic Cultural Tourism. MSCSJ [internet]. 2020 May 22 [cited 2026 Sep. 12];11(1):66-101. available from: https://so04.tci-thaijo.org/index.php/jnuks/article/view/167169