WONGPICHET, S.; WATYOTHA, C. The Suitability of The Utilization of Small Second-hand Agricultural Tractor : Case Study in Khon Kaen Province. Engineering and Applied Science Research, [S. l.], v. 31, n. 2, p. 123–132, 2013. Disponível em: https://ph01.tci-thaijo.org/index.php/easr/article/view/6707. Acesso em: 30 sep. 2026.