@book{19584, author = {Suraweera, P.S. and Dr. Mahesh Jayaweera}, title = {Comparison and performance evaluation of direct aerobic submerged attached growth and anaerobic cum aerobic submerged attached growth systems, for factory sewage}, year = {[2010]}, note = {TH1973 }, url = {http://dl.lib.mrt.ac.lk/handle/123/1924} }