Hunt, Bernice Kohn <br/><br/>
Secret codes and ciphers / 
Illustrated by Frank Aloise. 
 -  [1968] 
 - 63 páginas:  ilustraciones 
<br/><br/>I.- Is it a code or a cipher -- II.- Secret codes and ciphers -- III.- Concealment ciphers -- IV.- Transposition ciphers -- V.- The art of the cryptanalyst -- VI.- Substitution ciphers -- VII.- The vigenére tableau -- VIII.- The rise of the art -- IX.- Playfair -- X.- Ciphers in our century.- 
<br/><br/> Describes famous cases involving codes and ciphers, explains different ciphers, and tells how to create your own. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>CRIPTOGRAFIA--LITERATURA JUVENIL<br/>Cryptography.
<br/><br/><label>Dewey Class. No.: </label>652.8  / K79