https://www.thesaurus.asiana.net/vocab/ Ethnic Groups in Mekong River Basin (MRB) Wirapong Chansanam digital thesaurus; ethnic groups Wirapong Chansanam 2020-09-16 en-EN 2021-02-01 21:59:08 2021-05-27 15:56:34 คำสองพยางค์ (Disyllabic word) 2021-02-01 21:59:08 2021-05-27 15:56:34https://www.thesaurus.asiana.net/vocab/xml.php?skosTema=1429