Yudthana Leelathawornsuk. (2009) The role of sodium hydroxide concentration in fly ash-based geopolymer /. Kasetsart University,:ม.ป.ท.Yudthana Leelathawornsuk. 2009. The role of sodium hydroxide concentration in fly ash-based geopolymer /. ม.ป.ท.:Kasetsart University,;Yudthana Leelathawornsuk. The role of sodium hydroxide concentration in fly ash-based geopolymer /. ม.ป.ท.:Kasetsart University, 2009. Print.