Sarud Thumniyom. 2007. Use of sludge from wastewater treatment plants as adsorbents for removal of heavy metal ions from wather. Field of Study Chemistry, Chulalongkorn University;
Sarud Thumniyom. (2007) Use of sludge from wastewater treatment plants as adsorbents for removal of heavy metal ions from wather . Chulalongkorn University/Bangkok.
Sarud Thumniyom. Use of sludge from wastewater treatment plants as adsorbents for removal of heavy metal ions from wather. . Bangkok:Chulalongkorn University, 2007.
Sarud Thumniyom. (2007) Use of sludge from wastewater treatment plants as adsorbents for removal of heavy metal ions from wather . Chulalongkorn University/Bangkok.