Shawengkaew, Cheadthapong, and Sirawadee Arunyanart. 2022. “Secure Landfill Site Selection for Hazardous Waste Disposal in Khon Kaen Province”. Journal of Engineering, RMUTT 20 (2):1-12. https://ph01.tci-thaijo.org/index.php/jermutt/article/view/250214.