Codes and ciphers
by Ashton, Christina
Published by : Betterway Books (Cincinnati, Ohio) Physical details: pg. 110 Includes content ISBN:155870292X. Year: 1993| Item type | Current location | Call number | Status | Date due | Barcode |
|---|---|---|---|---|---|
| j 600 - 699 | j652.8 Ash (Browse shelf) | Available | 65341 |
Includes index and appendices
Provides the history behind codes and ciphers as used in spying and explains how readers themselces can make and use their own secret codes.