Warucha Kanchana-aksorn. (2009) Use of freshwater oligochaete [Limnodrilus hoffmeisteri] in sediment bioassay /. Kasetsart University,:ม.ป.ท.Warucha Kanchana-aksorn. 2009. Use of freshwater oligochaete [Limnodrilus hoffmeisteri] in sediment bioassay /. ม.ป.ท.:Kasetsart University,;Warucha Kanchana-aksorn. Use of freshwater oligochaete [Limnodrilus hoffmeisteri] in sediment bioassay /. ม.ป.ท.:Kasetsart University, 2009. Print.