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Arkitekturfotografier
Kopenhagen : Danmarks Kunstbibliotek, [2016]
Lizenzfreie Online-Ressourcen
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Gottscho-Schleisner Collection / Library of Congress
Washington : Library of Congress, 2003-
Lizenzfreie Online-Ressourcen
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Paris en images
Paris : Parisienne de Photographie, 2009-
Bibliothek, Germanisches Nationalmuseum Nürnberg , Lizenzfreie Online-Ressourcen
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ViewFinder : Historic England
Swindon : Archive Services, Historic England, 2007-
Lizenzfreie Online-Ressourcen
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Visual Media Center : Columbia University, Department of Art History and Archaeology
New York : Columbia University, 2012-
Lizenzfreie Online-Ressourcen
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The Huntington Archive, Digital database collection
Columbus, Ohio, 2006-
Lizenzfreie Online-Ressourcen