Phussadee Patnukao และ Prasert Pavasant. (2007) Utilization of eucalyptus bark waste for recovery of copper and lead. Chulalongkorn University:ม.ป.ท.Phussadee Patnukao และ Prasert Pavasant. 2007. Utilization of eucalyptus bark waste for recovery of copper and lead. ม.ป.ท.:Chulalongkorn University;Phussadee Patnukao และ Prasert Pavasant. Utilization of eucalyptus bark waste for recovery of copper and lead. ม.ป.ท.:Chulalongkorn University, 2007. Print.