Tulayakul, P., Boonsoongnern, A., Kasemsuwan, S., Ratanavanichrojn, N., Netvichian, R., & Khaodhiar, S. (2012). Heavy Metals, Escherichia coli and Salmonella spp. in Feeds, Reused Water, Wastewater and Manure from Swine Farms: A Case Report. Agriculture and Natural Resources, 46(6), 882–893. retrieved from https://li01.tci-thaijo.org/index.php/anres/article/view/243002