@book{147338, author = {Kumudu Lal, Luku Bogahawattage and Prof. (Mrs.) Niranjani Ratnayake}, title = {Root causes for the failures of existing sewerage system in Colombo Municiple Council area}, year = {[2013]}, note = {TH2494 }, url = {http://dl.lib.mrt.ac.lk/handle/123/10452} }