Sutida chantalaka และ Jirdsak Tscheikuna. (1993) Influence of nitrogen compounds on hydrodesulfruization lf thiophene. Chulalongkorn University:ม.ป.ท.Sutida chantalaka และ Jirdsak Tscheikuna. 1993. Influence of nitrogen compounds on hydrodesulfruization lf thiophene. ม.ป.ท.:Chulalongkorn University;Sutida chantalaka และ Jirdsak Tscheikuna. Influence of nitrogen compounds on hydrodesulfruization lf thiophene. ม.ป.ท.:Chulalongkorn University, 1993. Print.