Chemical diagram of 4-Methylbenzoic acid
<a href="//commons.wikimedia.org/w/index.php?title=User:SPhilbrick&amp;action=edit&amp;redlink=1" class="new" title="User:SPhilbrick (page does not exist)">SPhilbrick</a>
2009-05-24
<span class="int-own-work" lang="en">Own work</span>