File:Bielefeld 2011 CH4 Purification.png
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 00:24, 22 September 2011 | | 3,414 × 2,400 (62 KB) | JSchwarzhans (Talk | contribs) | |
| 23:08, 21 September 2011 |  | 3,414 × 2,400 (63 KB) | Mlimberg (Talk | contribs) |
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