Pattana Panyachtruk และ Sirichai Koonaphapdeelert. (2010) Treatment of septic tank effluent by combined in-line flocculation and membrane bioreactor/. Chiang Mai University,:ม.ป.ท.Pattana Panyachtruk และ Sirichai Koonaphapdeelert. 2010. Treatment of septic tank effluent by combined in-line flocculation and membrane bioreactor/. ม.ป.ท.:Chiang Mai University,;Pattana Panyachtruk และ Sirichai Koonaphapdeelert. Treatment of septic tank effluent by combined in-line flocculation and membrane bioreactor/. ม.ป.ท.:Chiang Mai University, 2010. Print.