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Source: enwiki: == Licensing ==
| I, the author of this work, hereby release it into the public domain. This applies worldwide.|
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|This page uses content from the Wikimedia Commons. The original content was at File:Nitrile reduction.png. The list of authors can be seen in the page history. As with this Psychology Wiki wiki, that portion of the content of Wikimedia Commons is available under the GNU Free Documentation License.|