Loads of codes and secret ciphers /
Discusses and provides practice in making and breaking codes and ciphers, as well as in building simple coding devices to transmit secret messages.
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| Format: | Book |
| Language: | English |
| Published: |
New York : London :
Macmillan ; Collier Macmillan,
[1984]
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| Subjects: |
| Summary: | Discusses and provides practice in making and breaking codes and ciphers, as well as in building simple coding devices to transmit secret messages. |
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| Item Description: | Includes index. |
| Physical Description: | ix, 108 pages : illustrations ; 24 cm. |
| ISBN: | 0027478106 |