Prapitpan Techawanitchai และ Soorathep Kheawhom. (2008) The Impact of heat exchanger fouling in hydrotreating unit on the optimum operation and maintenance. Chulalongkorn University:ม.ป.ท.Prapitpan Techawanitchai และ Soorathep Kheawhom. 2008. The Impact of heat exchanger fouling in hydrotreating unit on the optimum operation and maintenance. ม.ป.ท.:Chulalongkorn University;Prapitpan Techawanitchai และ Soorathep Kheawhom. The Impact of heat exchanger fouling in hydrotreating unit on the optimum operation and maintenance. ม.ป.ท.:Chulalongkorn University, 2008. Print.