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"Codes and codebreaking explains how spies through the ages have sent messages in secret. Clever new codes have constantly been developed, only for even cleverer codebreakers to set about uncovering their secrets. Some of these messages have caused wars, and others have saved lives. And still today, codes are a vital part of the spy's trade."--Back cover.
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Previews available in: English
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September 21, 2024 | Edited by ImportBot | import existing book |
August 15, 2023 | Edited by bitnapper | Merge works (MRID: 72547) |
December 20, 2020 | Edited by MARC Bot | import existing book |
February 28, 2020 | Edited by MARC Bot | remove fake subjects |
December 9, 2009 | Created by WorkBot | add works page |