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Gannon, Paul.

Colossus : Bletchley Park's greatest secret / Paul Gannon. - London : Atlantic, 2006. - xxiv, 562 p., [8] p. of plates : ill. ; 24 cm.

ISBN: 9781843543312

Nat. Bib. No.: GBA552783 bnb

Subjects--Topical Terms:
World War, 1939-1945--Cryptography.
Lorenz cipher system.
World War, 1939-1945--Electronic intelligence--Great Britain.
Computers--History.

Subjects--Geographic Terms:
Bletchley Park (Milton Keynes, England)--History.

Dewey Class. No.: 940.548641