Nattaporn Youravong. 2005. Dental caries and lead exposure in children. Songkla:Prince of Songkla University;
Nattaporn Youravong. (2005) Dental caries and lead exposure in children (รายงานผลงานวิจัย). Prince of Songkla University:Songkla.
Nattaporn Youravong. Dental caries and lead exposure in children. Songkla:Prince of Songkla University, 2005.
Nattaporn Youravong. (2005) Dental caries and lead exposure in children (รายงานผลงานวิจัย). Prince of Songkla University:Songkla.