Philaratsirisook, W. (2025). The Building of a Political Bastion of the Kalptinan Family in Ubon Ratchathani Province from 1995 to 2023. Ph.D. in Social Sciences Journal, 15(3), 827–842. retrieved from https://so05.tci-thaijo.org/index.php/phdssj/article/view/277460