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Unibibliotek Salzburg Artes liberales Retorica. Kolorierte Federzeichnung Unibibliothek Salzburg III Die sieben freien Knste Rhetorik und Tullius Marcus Tullius Cicero The Seven liberal arts Rhetoric and Tullius Marcus Tullius Cicero Artes Liberales Retorica et Tullius Rhetorica humanities edu ru Jahrhundert