The Six Unsolved Ciphers : Inside the Mysterious Codes That Have Confounded the World's Greatest Cryptographers
by Richard Belfield Perfect 2007
- Author: Richard Belfield
- ISBN 13: 9781569756287
- ISBN 10: 1569756287
- Publication Year: 2007
- Language: English
Specifications
| Index-10 | 1569756287 |
|---|---|
| Index-13 | 9781569756287 |
| Language | English |