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Diwrnod arbennig mewn hanes – Tachwedd 9, 1989. Dyma lyfr ffeithiau a lluniau am hanes dymchwel wal Berlin yn 1989. Addasiad o The Fall of the Berlin Wall (cyfres Days that Changed the World).A look at the build-up to the momentous day, the factors that created history and the aftermath of the fall of the Berlin Wall in 1989.
