File:1280px-PropyleneGlycol-stickAndBall.png: Difference between revisions
Kim Petersen (talk | contribs) PG molecule - helpfully taken from wikipedia [https://en.wikipedia.org/wiki/File:PropyleneGlycol-stickAndBall.png] It has been released to the Public Domain, and was created by [https://commons.wikimedia.org/wiki/User:Karlhahn], all credit goes to him. |
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