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The last Cambridge spy : John Cairncross, Bletchley codebreaker and Soviet double agent

Smith, Christopher, 1986-2019
Books
John Cairncross was among the most damaging spies of the 20th century. A member of the infamous Cambridge spy ring, he leaked highly sensitive documents from Bletchley Park, MI6 and the Treasury to the Soviet Union - including the first Atomic secrets and raw decrypts from Enigma and Tunny that influenced the outcome of the Battle of Kursk. Based on newly released archival materials, this biography covers the life and espionage of this singularly important spy.
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