Johann Michael Wittmer (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Johann Michael Wittmer" in English language version.

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wikipedia.org

de.wikipedia.org

  • Hyacinth Holland (1898). "Wittmer, Johann Michael". Allgemeine Deutsche Biographie (in German). Vol. 43. Leipzig: Duncker & Humblot. pp. 645–649.