Chanoknun Pongruang และ Sumaeth Chavadej. (2015) Competitive removal of mixed haevy metals from water by multistage foam fractionation. Chulalongkorn University:ม.ป.ท.Chanoknun Pongruang และ Sumaeth Chavadej. 2015. Competitive removal of mixed haevy metals from water by multistage foam fractionation. ม.ป.ท.:Chulalongkorn University;Chanoknun Pongruang และ Sumaeth Chavadej. Competitive removal of mixed haevy metals from water by multistage foam fractionation. ม.ป.ท.:Chulalongkorn University, 2015. Print.