A literature search and critical analysis of biological trickling filter studies.
Contributors: United States. Environmental Protection Agency. Office of Research and Monitoring.
Series: Water pollution control research series
Publisher: Office of Research and Monitoring, Environmental Protection Agency; for sale by the Supt. of Docs., U.S. Govt. Print. Off.
Published: 1971
Place of publication: [Washington]
Language: eng
Subjects: Trickling filters.
Notes: Bibliography: v. 2.
"Contract no. 14-12-474."
"17050 DDY 12/71."