Tianmanee, Kridsana, Seree Wongpichet, Eizo Taira, and Masami Ueno. “The study of the soil texture parameter in the upland of Khon Kaen province; Thailand”. Engineering and Applied Science Research 43 (November 2, 2016): 354–358. accessed September 23, 2026. https://ph01.tci-thaijo.org/index.php/easr/article/view/70249.