This <a href="https://en.wikipedia.org/wiki/vector_image" class="extiw" title="w:vector image">vector image</a> includes elements that have been taken or adapted from this file:
The original uploader was <a href="https://en.wikipedia.org/wiki/User:Prof.Haddock" class="extiw" title="wikipedia:User:Prof.Haddock">Prof.Haddock</a> at <a href="https://en.wikipedia.org/wiki/" class="extiw" title="wikipedia:">English Wikipedia</a>.
13 September 2014 (original upload date)
Transferred from <span class="plainlinks"><a class="external text" href="https://en.wikipedia.org">en.wikipedia</a></span> to Commons.