Portal:Germany/Anniversaries/April/April 23
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< Portal:Germany | Anniversaries | April
- 1516 - The Reinheitsgebot beer purity law is decreed by William IV, Duke of Bavaria
- 1805 - Birth of philosopher Johann Karl Friedrich Rosenkranz
- 1858 - Birth of physicist Max Planck, winner of the 1918 Nobel Prize in Physics
- 1895 - Death of physician Carl Ludwig
