00990cam a2200361 i 4500 000046250 5709 20030401134204.0 010220|1996 vm 000 eng 0471961639 IRC IRC IRC eng 628.2091732 MA-D Mara, D. Duncan (David Duncan), 1944- Low-cost urban sanitation / D. Duncan (David Duncan) Mara. Chichester ; New York : John Wiley and Sons, 1996. xv, 223p. : ill. Sanitation. Sewerage. Sewerage Tropics. Sewerage Economic aspects Tropics. Sewerage Social aspects Tropics. Sanitation Tropics. DUT From the UDN01 Monograph Printed language Mạng thư viện Đại học Đà Nẵng