Keywords: Ferdinand Redtenbacher, ca 1840.jpg en Ferdinand Redtenbacher ca 1840 1840 19th century litho found online at http //www europeana eu/portal/record/92062/BibliographicResource_1000126041054 html europeana eu Data provider Österreichische Nationalbibliothek - Austrian National Library other versions cc-zero Uploaded with UploadWizard Ferdinand Redtenbacher |