Porndanai Sarntanayoot และ Apichat Imyim. (2014) Modification of sludge from tap water production by iron for arsenic ions adsorption followed by solidification using cement. Chulalongkorn University:ม.ป.ท.Porndanai Sarntanayoot และ Apichat Imyim. 2014. Modification of sludge from tap water production by iron for arsenic ions adsorption followed by solidification using cement. ม.ป.ท.:Chulalongkorn University;Porndanai Sarntanayoot และ Apichat Imyim. Modification of sludge from tap water production by iron for arsenic ions adsorption followed by solidification using cement. ม.ป.ท.:Chulalongkorn University, 2014. Print.