Budiansky, Stephen <br/><br/>
Battle of wits : the complete story of codebreaking in world war II 

 - New York:  Free Press,  2000 
 - 436 p. : ill., maps ; 24 cm 
<br/><br/><label>ISBN: </label>9780743217347 
<br/><br/><label>Subjects--Topical Terms: </label><br/>World War, 1939-1945 - Cryptography
<br/><br/><label>Dewey Class. No.: </label>940.5485 BUD