Planck's son Erwin was arrested by the Gestapo following the attempted assassination of Hitler in the 20 July plot
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Captured 2026-08-15 from Wikipedia. The archived copy is preserved so this citation survives link rot.
Planck's son Erwin was arrested by the Gestapo following the attempted assassination of Hitler in the 20 July plot
Captured 2026-08-15 from Wikipedia. The archived copy is preserved so this citation survives link rot.