File: Activated Sludge 1.png
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Activated_Sludge_1.png (300 × 229 pixels, file size: 5 KB, MIME type: image/png)
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 04:55, 18 February 2009 | 300 × 229 (5 KB) | Lloyd Pumphrey (talk | contribs) | Imported from Wikipedia |
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