Button used in <a href="https://en.wikipedia.org/wiki/Free_Software_Foundation_Europe" class="extiw" title="w:Free Software Foundation Europe">FSFE</a>’s “Get a Free Software PDF reader!” campaign.
<a href="https://en.wikipedia.org/wiki/Free_Software_Foundation_Europe" class="extiw" title="w:Free Software Foundation Europe">Free Software Foundation Europe</a>
2009-02-01
Own work  using: <a rel="nofollow" class="external free" href="http://pdfreaders.org/graphics.html">http://pdfreaders.org/graphics.html</a>