chart showing the individual components of carbon in samples
Original uploader: <a href="https://en.wikipedia.org/wiki/User:Bg1654" class="extiw" title="en:User:Bg1654">User:Bg1654</a>
17 October 2007 (according to <a href="https://en.wikipedia.org/wiki/Exchangeable_image_file_format" class="extiw" title="en:Exchangeable image file format">Exif</a> data)
It was created by Teledyne Tekmar