Ataya Jongwisuttisun และ Thidarat Bunsri. (2010) Influence of pH and EC on settling velocity of lead contaminated sediment. Chulalongkorn University:ม.ป.ท.Ataya Jongwisuttisun และ Thidarat Bunsri. 2010. Influence of pH and EC on settling velocity of lead contaminated sediment. ม.ป.ท.:Chulalongkorn University;Ataya Jongwisuttisun และ Thidarat Bunsri. Influence of pH and EC on settling velocity of lead contaminated sediment. ม.ป.ท.:Chulalongkorn University, 2010. Print.