Wrixon, fred B <br/><br/>
Codes, ciphers and other cryptic & clandestine communication making and breaking secret message from hieroglyphs to the internet 

 - New york  Barnes & nobles. books  1998 
 - 704p.ill 
<br/><br/><label>ISBN: </label>0760754780 
<br/><br/><label>Subjects--Topical Terms: </label><br/>cryptography<br/>ciphers
<br/><br/><label>LC Class. No.: </label>Z103.3. W7 1998