Water Environment Federation. Operations and Maintenance Subcommittee, & Water Environment Federation. Task Force on Sanitary Sewer Maintenance. (1980). Operation and maintenance of wastewater collection systems. Water Pollution Control Federation.
Citación estilo ChicagoWater Environment Federation. Operations and Maintenance Subcommittee, and Water Environment Federation. Task Force on Sanitary Sewer Maintenance. Operation and Maintenance of Wastewater Collection Systems. Washington, D.C.: Water Pollution Control Federation, 1980.
Cita MLAWater Environment Federation. Operations and Maintenance Subcommittee, and Water Environment Federation. Task Force on Sanitary Sewer Maintenance. Operation and Maintenance of Wastewater Collection Systems. Washington, D.C.: Water Pollution Control Federation, 1980.