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Wikipedia: Bianca Maria Sforza

Anchor text: History of Freiburg

Wikipedia: Berthold V, Duke of Zähringen

Anchor text: Freiburgs Geschichte in Zitaten und die Revolution in Baden

Wikipedia: Baden Revolution

Anchor text: Die Affaire Nußbaum

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Wikipedia: Storming of Freiburg

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Wikipedia: History of Freiburg

Wikipedia: Cultural depictions of Maximilian I, Holy Roman Emperor

Wikipedia: Cultural depictions of Frederick Barbarossa

Wikipedia: Cultural depictions of Otto the Great