Phawinee Wutthikun และ Tharapong Vitidsant. (2001) Effect of activation by carbon dioxide and superheated steam on properties of activated carbon from coconut shells. Chulalongkorn University:ม.ป.ท.Phawinee Wutthikun และ Tharapong Vitidsant. 2001. Effect of activation by carbon dioxide and superheated steam on properties of activated carbon from coconut shells. ม.ป.ท.:Chulalongkorn University;Phawinee Wutthikun และ Tharapong Vitidsant. Effect of activation by carbon dioxide and superheated steam on properties of activated carbon from coconut shells. ม.ป.ท.:Chulalongkorn University, 2001. Print.