Chitnarin, Anisong, Stephen Kershaw, Anucha Promduang, and Prachya Tepnarong. “ northeastern Thailand”. Thai Geoscience Journal 3, no. 3 (January 15, 2022): 32–50. accessed April 20, 2025. https://ph03.tci-thaijo.org/index.php/TGJ/article/view/1795.