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Kettenschiffschleppverbund auf dem Main . Kettendampfer auf dem Main bei Frankfurt am Main um Foto Stadtarchiv Frankfurt Bild Seite in Kettenschiffahrt Siegbert Zesewitz Helmut Dntzsch Theodor Grtschel VEB Verlag Technik Berlin ISBN ca unbekannt uploader Dr Mirko Junge This image is in the public domain due to its age PDold