Book 2013
Codes, Ciphers and Secret Writing
4.01 13 readers shelved it
- Publisher
- Dover Publications, Incorporated
- Language
- English
- Published
- 2013
- Ciphers
- Juvenile literature
- Cryptography
- Cryptography.
- Ciphers.
- Signs and symbols
- Writing
Explains in simple terms how to encode and decode messages in various ciphers, describes coding machines, and gives formulas for invisible ink.