Siriporn Lersjintanakarn และ Pisut Painmanakul. (2008) Treatment of lubricant oily emulsion wastewater by combining flotation and coagulation process. Chulalongkorn University:ม.ป.ท.Siriporn Lersjintanakarn และ Pisut Painmanakul. 2008. Treatment of lubricant oily emulsion wastewater by combining flotation and coagulation process. ม.ป.ท.:Chulalongkorn University;Siriporn Lersjintanakarn และ Pisut Painmanakul. Treatment of lubricant oily emulsion wastewater by combining flotation and coagulation process. ม.ป.ท.:Chulalongkorn University, 2008. Print.