File:Quaternary-ammonium-cation.svg
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Quaternary-ammonium-cation.svg (SVG file, nominally 137 × 128 pixels, file size: 5 KB)
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 11:08, 6 May 2006 | 137 × 128 (5 KB) | Benjah-bmm27 | ({{PD-self}} Category:Chemical structures) |
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