Search Results for the EPA National Library Catalog

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Your Search: (AUTHOR=Hais AND Alan AND B)

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Select Item	Title	Year Published
1	Activated sludge treatment systems with oxygen /	1973
2	Alum addition and step-feed studies in oxygen-activated sludge /	1977
3	Alum addition to activated sludge with tertiary solids removal /	1973
4	Cost effective use of municipal wastewater treatment ponds /	1978
5	Cost of Land Treatment Sytems.	1979
6	System Alternatives in Oxygen Activated Sludge.	1975

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