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A complete, factual account of cryptology including famous personalities, the techniques and the history of this science.

The codebreakers 1978, Sphere, London

ISBN-13: 9780722151525

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The codebreakers 1977, Sphere, London

ISBN-13: 9780722151495

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The codebreakers 1974, Weidenfeld and Nicolson, London

ISBN-13: 9780297767855

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Codebreakers 1973, Signet Book

ISBN-13: 9780451089670

Mass-market paperback

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The Codebreakers 1973, Sphere, London

ISBN-13: 9780722151464

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The Codebreakers 1967, MacMillan Publishing Company

ISBN-13: 9780025604605

Hardcover

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