Chutima Ploychankul และ Sumana Siripattanakul. (2010) Effect of silver nanoparticles on nitrification by entrification by entrapped /. Chulalongkorn University,:ม.ป.ท.Chutima Ploychankul และ Sumana Siripattanakul. 2010. Effect of silver nanoparticles on nitrification by entrification by entrapped /. ม.ป.ท.:Chulalongkorn University,;Chutima Ploychankul และ Sumana Siripattanakul. Effect of silver nanoparticles on nitrification by entrification by entrapped /. ม.ป.ท.:Chulalongkorn University, 2010. Print.