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Action This Day by Michael Smith front cover

Action This Day

by Michael Smith
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Colossus: Bletchley Park's Greatest Secret by Paul Gannon front cover

Colossus: Bletchley Park's Greatest Secret

by Paul Gannon
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Breaking the Code by Hugh Whitemore front cover

Breaking the Code

by Hugh Whitemore
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The Cliveden Set: Portrait of an Exclusive Fraternity by Norman Rose front cover

The Cliveden Set: Portrait of an Exclusive Fraternity

by Norman Rose
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Decrypted Secrets: Methods and Maxims of Cryptology by Friedrich L. Bauer front cover

Decrypted Secrets: Methods and Maxims of Cryptology

by Friedrich L. Bauer
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Thirty Secret Years by Robin Denniston front cover

Thirty Secret Years

by Robin Denniston
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The Verneys by Adrian Tinniswood front cover

The Verneys

by Adrian Tinniswood
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Codebreakers: The Inside Story of Bletchley Park by F. H. Hinsley front cover

Codebreakers: The Inside Story of Bletchley Park

by F. H. Hinsley
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Enigma by Robert Harris front cover

Enigma

by Robert Harris
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The Bletchley Park Codebreakers by Ralph Erskine front cover

The Bletchley Park Codebreakers

by Ralph Erskine
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Beyond Top Secret Ultra by Ewen Montagu front cover

Beyond Top Secret Ultra

by Ewen Montagu
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The Emperor's Codes: The Breaking of Japan's Secret Ciphers by Michael Smith front cover

The Emperor's Codes: The Breaking of Japan's Secret Ciphers

by Michael Smith
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The Code Book by Simon Singh front cover

The Code Book

by Simon Singh
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Secret Days: Codebreaking in Bletchley Park by Asa Briggs front cover

Secret Days: Codebreaking in Bletchley Park

by Asa Briggs
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THE LAST GOOD WAR: A Novel by Paul Wonnacott front cover

THE LAST GOOD WAR: A Novel

by Paul Wonnacott
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