A comparison of oxidation ditch plants to competing processes for secondary and advanced treatment of municipal wastes /
by William F. Ettlich ; Culp/Wesner/Culp-Clean Water Consultants.

APA Citation

Ettlich, W. F., Culp/Wesner/Culp., Municipal Environmental Research Laboratory. Wastewater Research Division. (1978). A comparison of oxidation ditch plants to competing processes for secondary and advanced treatment of municipal wastes. Cincinnati, Ohio: Environmental Protection Agency, Office of Research and Development, Municipal Environmental Research Laboratory, Wastewater Research Division ; Springfield, Va. .

MLA Citation

Ettlich, William F, Culp/Wesner/Culp, and Municipal Environmental Research Laboratory. Wastewater Research Division. A Comparison of Oxidation Ditch Plants to Competing Processes for Secondary And Advanced Treatment of Municipal Wastes. Cincinnati, Ohio: Environmental Protection Agency, Office of Research and Development, Municipal Environmental Research Laboratory, Wastewater Research Division ; Springfield, Va. , 1978.

Warning: These citations may not always be complete (especially for serials).