Codes & ciphers
hundreds of unusual and secret ways to send messages
Edición de la obra Codes & ciphers
| Autor | Christina Ashton |
|---|---|
| Editorial | Betterway Books |
| Fecha de publicación | 1993 |
| Lugar | Cincinnati, Ohio |
| Idioma | inglés |
| Páginas | 110 |
| ISBN-10 | 155870292X |
| LCCN | 92039008 |
| Número de Cutter | A828c |
Provides the history behind codes and ciphers as used in spying and explains how readers themselves can make and use their own secret codes.