File:Concrete biosand filter.jpg
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Concrete_biosand_filter.jpg (514 × 388 pixels, file size: 228 KB, MIME type: image/jpeg)
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 02:00, 15 May 2012 | | 514 × 388 (228 KB) | Winona (talk | contribs) |
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