The emperor's codes
the breaking of Japan's secret ciphers
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Identifiers
- ISBN-139781611450170
- ISBN-101611450179
- Library of Congress Control Number2011001771
- OCLC Control Number679921061
- Better World Books9781611450170
and 1 more
- Open LibraryOL25076874M
Classifications
- DDC940.54/8641
- LCCD810.C88 S656 2011
- LCCD810.C88S656 2011
Subjects
Topics
HistoryCiphersCryptographyMachine ciphersWorld War, 1939-1945Electronic intelligenceULTRA (Intelligence system)Japan, politics and governmentWorld war, 1939-1945, cryptographyGreat britain, politics and governmentUnited states, politics and governmentGreat Britain. Government Communications Headquarters
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