Ajith Upul Knatha Ethugala และ Suchat Leungprasert. (2013) Seasonal variation of heavy metals in riverbank sediments from lower Chao Phraya river, Thailand. Kasetsart University:ม.ป.ท.Ajith Upul Knatha Ethugala และ Suchat Leungprasert. 2013. Seasonal variation of heavy metals in riverbank sediments from lower Chao Phraya river, Thailand. ม.ป.ท.:Kasetsart University;Ajith Upul Knatha Ethugala และ Suchat Leungprasert. Seasonal variation of heavy metals in riverbank sediments from lower Chao Phraya river, Thailand. ม.ป.ท.:Kasetsart University, 2013. Print.