"Discusses the difference between codes and ciphers, common codes and ciphers that have been used during wars, and how to create simple ciphers"--Provided by publisher.
- ISBN10 1595665943
- ISBN13 9781595665942
- Publish Date 10 January 2008
- Publish Status Out of Stock
- Imprint QEB Publishing
- Format Hardcover (Library Binding)
- Pages 32
- Language English