Itsariya Wittayarak และผู้แต่งคนอื่นๆ. (2014) Removal of arsenic from wastewater by co-precipitation with ferric ions and alum using experimental design approach. Chulalongkorn University:ม.ป.ท.Itsariya Wittayarak และผู้แต่งคนอื่นๆ. 2014. Removal of arsenic from wastewater by co-precipitation with ferric ions and alum using experimental design approach. ม.ป.ท.:Chulalongkorn University;Itsariya Wittayarak และผู้แต่งคนอื่นๆ. Removal of arsenic from wastewater by co-precipitation with ferric ions and alum using experimental design approach. ม.ป.ท.:Chulalongkorn University, 2014. Print.