Wrixon, Fred B. <br/><br/>
Codes and ciphers / 
Fred B. Wrixon. 
 - 1st ed. 
 - New York :  Prentice Hall,  c1992. 
 - xii, 260p. :  ill. ;  23cm. 
<br/><br/> Includes bibliography and index 
<br/><br/> An alphabetical exploration of the world of codes and ciphers and significant individuals involved in that field. 
<br/><br/><label>ISBN: </label>0132770474 :  $18.00 
<br/><br/><label>LCCN: </label>91042848  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Cryptography--Juvenile literature.<br/>Ciphers--Juvenile literature.<br/>Cryptography--Dictionaries.<br/>Ciphers--Dictionaries.
<br/><br/><label>Dewey Class. No.: </label>652.8 WRI