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| Cover of Rheticus' "De libris revolutionum Copernici Narratio Prima Excusum Gedani", (1540). The first published account of Nicolaus Copernicus ' heliocentric theory.| http://special.library.louisville.edu/display-picture.asp?PIC=Rheticus.jpg&MODE=1&ID=467| Georg Joachim Rheticus| [{Image src='https://www.austria-forum.org/cc/images/slim/publicdomain.png' alt='Public domain' align='center' link='https://www.austria-forum.org/cc/public-domain-10.html' target='_blank'}]| Datei:Narratio prima.jpg
| Wikisource logo, no text variant| By Rei-artur pt en Rei-artur blog| Nicholas Moreau| [{Image src='https://www.austria-forum.org/cc/images/slim/by-sa.png' alt='CC BY-SA 3.0' align='center' link='https://www.austria-forum.org/cc/by-sa-30.html' target='_blank'}]| Datei:Wikisource-logo.svg
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