Jakraphan Suwanvijit และ Narong Praphairaksit. (2009) Extraction of gold (III) using modified activated carbon. Chulalongkorn University:ม.ป.ท.Jakraphan Suwanvijit และ Narong Praphairaksit. 2009. Extraction of gold (III) using modified activated carbon. ม.ป.ท.:Chulalongkorn University;Jakraphan Suwanvijit และ Narong Praphairaksit. Extraction of gold (III) using modified activated carbon. ม.ป.ท.:Chulalongkorn University, 2009. Print.