Wannipha Amatyakul และ Pienpak Tasakorn. (2006) Photo-degradation of natural rubber films for natural gas application. Chulalongkorn University:ม.ป.ท.Wannipha Amatyakul และ Pienpak Tasakorn. 2006. Photo-degradation of natural rubber films for natural gas application. ม.ป.ท.:Chulalongkorn University;Wannipha Amatyakul และ Pienpak Tasakorn. Photo-degradation of natural rubber films for natural gas application. ม.ป.ท.:Chulalongkorn University, 2006. Print.