Talk:Otto Roelen

External links modified
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I have just modified one external link on Otto Roelen. 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 https://web.archive.org/web/20070928003354/http://www.tu-braunschweig.de/Medien-DB/anchem/homogenekat-4bw.pdf to http://www.tu-braunschweig.de/Medien-DB/anchem/homogenekat-4bw.pdf

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Cheers.— InternetArchiveBot  (Report bug) 15:22, 9 January 2018 (UTC)