Wilaiwan Chaengcharoen. 2007. Comparision of heavy metals removal from contaminated soil by siam weed (Chromolaena odorata) and vetiver grass (Vetiveria zizanioides). Field of Study Environmental Management, Chulalongkorn University;
Wilaiwan Chaengcharoen. (2007) Comparision of heavy metals removal from contaminated soil by siam weed (Chromolaena odorata) and vetiver grass (Vetiveria zizanioides) . Chulalongkorn University/Bangkok.
Wilaiwan Chaengcharoen. Comparision of heavy metals removal from contaminated soil by siam weed (Chromolaena odorata) and vetiver grass (Vetiveria zizanioides). . Bangkok:Chulalongkorn University, 2007.
Wilaiwan Chaengcharoen. (2007) Comparision of heavy metals removal from contaminated soil by siam weed (Chromolaena odorata) and vetiver grass (Vetiveria zizanioides) . Chulalongkorn University/Bangkok.