Ladapan Saengklai. 2008. Assessment of drinking water for school students after intervention by providing knowledge of sanitary conditions. Bangkok:Thammasat University; DOI : https://doi.nrct.go.th/ListDoi/listDetail?Resolve_DOI=10.14457/TU.res.2008.33

Ladapan Saengklai. Assessment of drinking water for school students after intervention by providing knowledge of sanitary conditions. Bangkok:Thammasat University, 2008. DOI : https://doi.nrct.go.th/ListDoi/listDetail?Resolve_DOI=10.14457/TU.res.2008.33

Ladapan Saengklai. (2008) Assessment of drinking water for school students after intervention by providing knowledge of sanitary conditions (รายงานผลงานวิจัย). Thammasat University:Bangkok. DOI : https://doi.nrct.go.th/ListDoi/listDetail?Resolve_DOI=10.14457/TU.res.2008.33