©2013 National Research Council of Thailand
Prachya Watasit. 2008. Preparation of silica adsorbent from rice husk ash. Faculty of Science, Chulalongkorn University;
Prachya Watasit. (2008) Preparation of silica adsorbent from rice husk ash . Chulalongkorn University/Bangkok.
Prachya Watasit. Preparation of silica adsorbent from rice husk ash. . Bangkok:Chulalongkorn University, 2008.
Prachya Watasit. (2008) Preparation of silica adsorbent from rice husk ash . Chulalongkorn University/Bangkok.