Chatri Saosub และ Manaskorn Rachakornkij. (2007) Utilization of fly ash from biomass power plant in lightweight concrete. Chulalongkorn University:ม.ป.ท.Chatri Saosub และ Manaskorn Rachakornkij. 2007. Utilization of fly ash from biomass power plant in lightweight concrete. ม.ป.ท.:Chulalongkorn University;Chatri Saosub และ Manaskorn Rachakornkij. Utilization of fly ash from biomass power plant in lightweight concrete. ม.ป.ท.:Chulalongkorn University, 2007. Print.