Jirawan Jampanil และ Thares Srisatit. (2008) Prepration of modified clay from Koh Kred and bentonite by pillaring for adsorption of benzene, toluene and xylene. Chulalongkorn University:ม.ป.ท.Jirawan Jampanil และ Thares Srisatit. 2008. Prepration of modified clay from Koh Kred and bentonite by pillaring for adsorption of benzene, toluene and xylene. ม.ป.ท.:Chulalongkorn University;Jirawan Jampanil และ Thares Srisatit. Prepration of modified clay from Koh Kred and bentonite by pillaring for adsorption of benzene, toluene and xylene. ม.ป.ท.:Chulalongkorn University, 2008. Print.