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 2021-01-28 15:23:20 2021-05-27 16:24:33 คนชายขอบ (Marginal people) 2021-01-28 15:23:20 2021-05-27 16:24:33https://www.thesaurus.asiana.net/vocab/xml.php?skosTema=18https://www.thesaurus.asiana.net/vocab/xml.php?skosTema=778