Combined treatment of domestic and industrial wastes by activated sludge.
[Prepared] for the Water Quality Office, Environmental Protection Agency.

APA Citation

Dallas, O., United States. Environmental Protection Agency. Water Quality Office. (1971). Combined treatment of domestic and industrial wastes by activated sludge. Washington: [Environmental Protection Agency, Water Quality Office]; for sale by the Supt. of Docs., U. S. Govt. Print. Off..

MLA Citation

Dallas, Or, and United States. Environmental Protection Agency. Water Quality Office. Combined Treatment of Domestic And Industrial Wastes by Activated Sludge. Washington: [Environmental Protection Agency, Water Quality Office]; for sale by the Supt. of Docs., U. S. Govt. Print. Off., 1971.