Siriporn Poltam และ Wilai Chiemchaisri. (2012) Treatment of paracetamol in Bangkok's sewage by activated sludge process and its attenuation in receiving canal. Kasetsart University,:ม.ป.ท.Siriporn Poltam และ Wilai Chiemchaisri. 2012. Treatment of paracetamol in Bangkok's sewage by activated sludge process and its attenuation in receiving canal. ม.ป.ท.:Kasetsart University,;Siriporn Poltam และ Wilai Chiemchaisri. Treatment of paracetamol in Bangkok's sewage by activated sludge process and its attenuation in receiving canal. ม.ป.ท.:Kasetsart University, 2012. Print.