Title: | Slow sand filter maintenance : costs and effects on water quality |
Author: | Letterman, Raymond D. |
Author: | Cullen, Thomas R. |
Author: | Water Engineering Research Laboratory |
Note: | U.S. Environmental Protection Agency, Water Engineering Research Laboratory, 1985 |
Link: | page images at HathiTrust |
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Subject: | Water quality -- New York (State) -- Cost effectiveness |
Subject: | Water treatment plants -- New York (State) -- Cost effectiveness |
Subject: | Water -- Purification -- Slow sand filtration -- New York (State) -- Cost effectiveness |
Subject: | Water -- Purification -- Slow sand filtration -- New York (State) -- Cost of operation |
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