Parallel evaluation of air-and oxygen-activated sludge
By: Scott Austin, Fred Yunt, and Donald Wuerdeman
Contributors: Yunt, Fred; Wuerdeman, Donald; Municipal Environmental Research Laboratory
Publisher: U.S. Environmental Protection Agency, Municiple Environmental Research Laboratory; Center for Environmental Research Information [distributor]
Published: 1981
Place of publication: Cincinnati, OH
Language: eng
Subjects: Sewage -- Purification -- Activated sludge process; Sewage sludge
Notes: Cover title

At head of title: Project summary

"Sept. 1981."

"EPA-600/S1-81-155."