Piralada Bunnag. (2000) Removal of arsenic from water by freshwater algae. Mahidol University,:ม.ป.ท.Piralada Bunnag. 2000. Removal of arsenic from water by freshwater algae. ม.ป.ท.:Mahidol University,;Piralada Bunnag. Removal of arsenic from water by freshwater algae. ม.ป.ท.:Mahidol University, 2000. Print.