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Lehrlingsbuch Wirtschaftsmuseum RV . Lehrlingsbuch der Maschinenfabrik Weingarten aus dem Jahr aufgeschlagene Seite Wirtschaftsmuseum Ravensburg Institution Wirtschaftsmuseum Ravensburg own own photograph Photo Andreas Praefcke Document is ineligible for copyright Photos by User AndreasPraefcke Wirtschaftsmuseum Ravensburg Exercise