Onnuam, Rungkan, Tuanthong Chaowakeeratipong, and Rekha Aranyawong. 2019. “The Strategy for Domestic Wastewater Management in Kamphaeng Phet Province”. Humanities and Social Sciences Journal of Pibulsongkram Rajabhat University 13 (2):481-96. https://so01.tci-thaijo.org/index.php/GraduatePSRU/article/view/167798.