Vitenskapsåret 1648 (Norwegian Wikipedia)

Analysis of information sources in references of the Wikipedia article "Vitenskapsåret 1648" in Norwegian language version.

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42nd place
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archive.org

creighton.edu

mattson.creighton.edu

  • «Johann Baptista van Helmont». History of Gas Chemistry. Center for Microscale Gas Chemistry, Creighton University. 25. september 2005. Besøkt 23. februar 2007. 

illustratedgarden.org