Bunprom, Punpaphatporn, Saipin Chaiyanan, and Sitthipan Chaiyanan. “Study for Factors Affecting Health Risk from Work of Employee in Pump and Valve Service Company”. Journal of Advanced Development in Engineering and Science 7, no. 20 (August 22, 2023): 15–27. accessed January 8, 2026. https://ph03.tci-thaijo.org/index.php/pitjournal/article/view/879.