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!!!License Information of Images on page
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| The Wikimedia Commons logo, SVG version.| Original created by Reidab ( PNG version ) SVG version was created by Grunt and cleaned up by 3247 . Re-creation with SVG geometry features by Pumbaa , using a proper partial circle and SVG geometry features. (Former versions used to be slightly warped.)| Reidab , Grunt , 3247 , Pumbaa| [{Image src='https://www.austria-forum.org/cc/images/slim/by-sa.png' alt='CC BY-SA 3.0' align='center' link='https://www.austria-forum.org/cc/by-sa-30.html' target='_blank'}]| Datei:Commons-logo.svg
| Heinrich Siegel (1830-1899), Büste (weißer Marmor) im Arkadenhof der Universität Wien , (Maisel-Nummer 16), Künstler: Melanie Horsetzky von Hornthal (1852-1931), unveiled 1902| Eigenes Werk| Hubertl| [{Image src='https://www.austria-forum.org/cc/images/slim/by-sa.png' alt='CC BY-SA 4.0' align='center' link='https://www.austria-forum.org/cc/by-sa-40.html' target='_blank'}]| Datei:Heinrich Siegel (Nr. 16) - Bust in the Arkadenhof, University of Vienna - 0282.jpg
| Heinrich Siegel (1830–1899)| Almanach der Kaiserlichen Akademie der Wissenschaften. Volume 50, Wien 1900, plate after page 362| A. Steininger sc. August Steininger (1873 – before 1937), see: Manfred Neureiter: Lexikon der Exlibriskünstler. book-on-demand.de, 1998, ISBN 3868054626 , p. 420 ( online )| [{Image src='https://www.austria-forum.org/cc/images/slim/publicdomain.png' alt='Public domain' align='center' link='https://www.austria-forum.org/cc/public-domain-10.html' target='_blank'}]| Datei:Siegel, Heinrich (1830-1899).jpg
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