Talk:Timeline of scientific thought

External links modified
Hello fellow Wikipedians,

I have just modified 1 one external link on Timeline of scientific thought. 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/20110611105753/http://www.garfield.library.upenn.edu/classics1981/A1981LC33300001.pdf to http://www.garfield.library.upenn.edu/classics1981/A1981LC33300001.pdf

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Cheers.—cyberbot II  Talk to my owner :Online 04:48, 2 July 2016 (UTC)