| ID | 000786 |
| Call Number | 652.8 /POS |
| Title Proper | Codes |
| Other Title Information | How to Make Them and Break Them! |
| Language | ENG |
| Author | Poskitt, Kjartan |
| Publication | London, Scholastic, 2000. |
| Description | 160p Yellow Spine |
| Series | Murderous Maths |
| Note | All you need to be a code-cracking genius! Kjartan Poskitt and his crew of Murderous Maths characters return to take the agony out of cryptanalysis. There are tips and tricks on how to crack substitution codes, message systems such as morse are explained and the secrets of Enigma are revealed. |
| Standard Number | 0439943280 |
| Price. Qualification | £4.99(Pb) |
| Classification Number | 652.8 |
| Key Words | Ciphers ; Cryptography ; Crime ; Crime scene investigation ; CSI |