Fred B. Wrixon (edit name/settings)

Bibliography

1. (1998)

   Codes, Ciphers and Other Cryptic and Clandestine Communication: 400 Ways to Send Secret Messages from Hieroglyphs to the Internet

2. (1992)

   Codes and Ciphers: An A to Z of Covert Communication, from the Clay Tablet to the Microdot

3. (1989)

   Codes, Ciphers, and Secret Languages

4. 2440 Question Answer Enter Entic &