Continued evaluation of oxygen use in conventional activated sludge processing / [Authors: M. A. McDowell and others. Prepared] for the Office of Research and Monitoring, Environmental Protection Agency.

Saved in:
MacDowell, M. A.
Washington : [U.S. Environmental Protection Agency]; for sale by the Supt. of Docs., U.S. Govt. Print. Off., 1972.
viii, 164 p.
Cover title: Activated sludge processing
"17050 DNW 02/72."
Prepared under contract no. 14-12-867
Water pollution control research series.
sewage : purification
water purification : oxigen effect

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