Ronbanchob Apiratikul และ Prasert Pavasant. (2006) Sorption of heavy metals by green macro alga, Caulerpa lentillifera and modified zeolite from coal fly ash. Chulalongkorn University:ม.ป.ท.Ronbanchob Apiratikul และ Prasert Pavasant. 2006. Sorption of heavy metals by green macro alga, Caulerpa lentillifera and modified zeolite from coal fly ash. ม.ป.ท.:Chulalongkorn University;Ronbanchob Apiratikul และ Prasert Pavasant. Sorption of heavy metals by green macro alga, Caulerpa lentillifera and modified zeolite from coal fly ash. ม.ป.ท.:Chulalongkorn University, 2006. Print.