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Codes and ciphers : Julius Caesar, the Enigma, and the internet /
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| Format: | Printed Book |
| Language: | English |
| Published: |
Cambridge ; New York :
Cambridge University Press,
2002.
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| Physical Description: | x, 240 p. : ill. ; |
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| ISBN: | 052181054X (hbk.) 0521008905 (pbk.) |