Friedrich Karl Ludwig, Duke of Schleswig-Holstein-Sonderburg-Beck (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Friedrich Karl Ludwig, Duke of Schleswig-Holstein-Sonderburg-Beck" in English language version.

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6^th place

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1books.google.com

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archive.org

Der Elephanten-Orden und seine Ritter. Von Johann Heinrich Friedrich Berlien

books.google.com

Genealogie ascendante jusqu'au quatrieme degre inclusivement de tous les Rois et Princes de maisons souveraines de l'Europe actuellement vivans [Genealogy up to the fourth degree inclusive of all the Kings and Princes of sovereign houses of Europe currently living] (in French). Bourdeaux: Frederic Guillaume Birnstiel. 1768. p. 77.