Talk:Quinonoid zwitterion

External links modified
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I have just modified 1 one external link on Quinonoid zwitterion. Please take a moment to review my edit. If you have any questions, or need the bot to ignore the links, or the page altogether, please visit this simple FaQ for additional information. I made the following changes:
 * Added archive http://web.archive.org/web/20040724210710/http://www.kok.chembio.ntnu.no:80/SEMINAR/Abstract-siri.pdf to http://www.kok.chembio.ntnu.no/SEMINAR/Abstract-siri.pdf

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Cheers.— InternetArchiveBot  (Report bug) 15:31, 21 July 2016 (UTC)