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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 17:08, 15 June 2018 | 1,254 × 1,053 (349 KB) | Shyamal | {{Information |Description=Plan view of Jewell filter |Source={{cite journal|title=Description of experimental filter plant at Pittsburgh, and results of experiments|author=Knowles, Morris| journal=Journal of the New England Water Works Association| volume=15|issue=2|year=1900|pages=148-188|url=descriptionofexp00know#page/148/mode/1up/}} |Date=1900 |Author=Morris Knowles |Permission={{pd-1923}} |other_versions= }} Category:Water filters |
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