Prungchaibhum W, Kulhintung P, Panyapong S, Dhammachak O, Wairabutr K. The Existence of Niakuall Ethnic Groups in Chaiyaphum Province. ambj [Internet]. 2017 Dec. 24 [cited 2024 May 17];2(2):99-107. Available from: https://so06.tci-thaijo.org/index.php/ambj/article/view/241609