KopjeRiedel, Ludwig gebruikt in: Integrated Authority File (GND), Germany
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Gevonden inLoC, Vorlage
Ludwig Riedel (1790-1861), member of Georg Heinrich von Langsdorff's expedition. [Johann Moritz Rugendas / Diener, Pablo and Costa, Maria de Fátima. Rugendas e o Brasil. São Paulo: Capivara, 2002. (Portuguese) -- Public domain -- http://commons.wikimedia.org/wiki/File:Ludwig riedel 1846.jpg]