File:Rapid sand filter.jpg
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Rapid_sand_filter.jpg (430 × 361 pixels, file size: 124 KB, MIME type: image/jpeg)
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 02:33, 15 May 2012 | 430 × 361 (124 KB) | Winona (talk | contribs) |
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