©2013 National Research Council of Thailand
Watchara Noppakun. 2000. The survey of fluorotoxicosis in school children and fluoride levels in waters from Amphoe Muang Changwat Chiang Rai. Field of Study Environmental Science, Chiang Mai University;
Watchara Noppakun. (2000) The survey of fluorotoxicosis in school children and fluoride levels in waters from Amphoe Muang Changwat Chiang Rai . Chiang Mai University/Chiang mai.
Watchara Noppakun. The survey of fluorotoxicosis in school children and fluoride levels in waters from Amphoe Muang Changwat Chiang Rai. . Chiang mai:Chiang Mai University, 2000.
Watchara Noppakun. (2000) The survey of fluorotoxicosis in school children and fluoride levels in waters from Amphoe Muang Changwat Chiang Rai . Chiang Mai University/Chiang mai.