Reungruthai Sirirak และผู้แต่งคนอื่นๆ. (2022) Effect of lignite fly ash and rice husk ash ratios on physical properties of lightweight porous geopolymers fabricated by pore-forming agent method. <i>Science Technology and Engineering Journal (STEJ)</i>, <i>8</i>(2), 40-49.Reungruthai Sirirak และผู้แต่งคนอื่นๆ. "Effect of lignite fly ash and rice husk ash ratios on physical properties of lightweight porous geopolymers fabricated by pore-forming agent method". Science Technology and Engineering Journal (STEJ) 8 (2022):40-49.Reungruthai Sirirak และผู้แต่งคนอื่นๆ. Effect of lignite fly ash and rice husk ash ratios on physical properties of lightweight porous geopolymers fabricated by pore-forming agent method. Mahasarakham University:ม.ป.ท. 2022.