Withaya Panpa และ Supatra Jinawath. (2008) Preparation of photocatalytic material from zeolite synthesized by using rice husk silica. Chulalongkorn University:ม.ป.ท.Withaya Panpa และ Supatra Jinawath. 2008. Preparation of photocatalytic material from zeolite synthesized by using rice husk silica. ม.ป.ท.:Chulalongkorn University;Withaya Panpa และ Supatra Jinawath. Preparation of photocatalytic material from zeolite synthesized by using rice husk silica. ม.ป.ท.:Chulalongkorn University, 2008. Print.