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Operation Ultra was designed to intercept & decode German signals sent using Enigma, the top-secret German cypher machine. F.W. Winterbotham, was the man responsible for the organization, distribution & security of Ultra. This is his personal account of the operation.
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The Ultra Secret, Frederick W. Winterbotham
- Langue
- Année de publication
- 1975
- product-detail.submit-box.info.binding
- (souple),
- État du livre
- Abîmé
- Prix
- 4,04 €
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