Search Results for the EPA National Library Catalog

Items Found: 6
Showing: Items 1 - 6
Your Search: (AUTHOR=Hais AND Alan AND B)

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

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