Del Mundo Dacera และผู้แต่งคนอื่นๆ. (2007) Extraction and removal of heavy metals from contaminated sludge using raw and fermented liquid from pineapple wastes. Environmental Technology Program, School of Bio-Chemical Engineering and Technology, Sirindhorn International Institute of Technology, Thammasat University,:ม.ป.ท.Del Mundo Dacera และผู้แต่งคนอื่นๆ. 2007. Extraction and removal of heavy metals from contaminated sludge using raw and fermented liquid from pineapple wastes. ม.ป.ท.:Environmental Technology Program, School of Bio-Chemical Engineering and Technology, Sirindhorn International Institute of Technology, Thammasat University,;Del Mundo Dacera และผู้แต่งคนอื่นๆ. Extraction and removal of heavy metals from contaminated sludge using raw and fermented liquid from pineapple wastes. ม.ป.ท.:Environmental Technology Program, School of Bio-Chemical Engineering and Technology, Sirindhorn International Institute of Technology, Thammasat University, 2007. Print.