The emperor's codes
Subtitle: the breaking of Japan's secret ciphers
By: Michael Smith
Publisher: Arcade Pub.
Published: 2011
Place of publication: New York
Language: eng
ISBN-13: 9781611450170
Subjects: Machine ciphers; ULTRA (Intelligence system); Great Britain; World War, 1939-1945; Cryptography; Great Britain. Government Communications Headquarters; Electronic intelligence; History
Notes: Original edition has subtitle: Bletchley Park and the breaking of Japan's secret ciphers.

Originally published: London : Bantam Press, 2000.

Includes bibliographical references and index.