| ID | 038187 |
| Call Number | 358.24/NOR |
| Title Proper | Secret warfare |
| Other Title Information | the battle of codas and ciphers |
| Language | ENG |
| Author | Norman, Bruce |
| Publication | Newton Abbot, David & Charles, 1973. |
| Description | 187p.+ 22cm. |
| Standard Number | 0715362232 |
| Classification Number | 358.24 |
| Key Words | Espinacy ; Spies - Code - Cipher ; Cryptography - Intelligence Security |