Kippenhahn, Rudolf, <br/><br/>
Code Breaking :   A History and Exploration /  
By Rudolf Kippenhahn .  
 - 1st ed. 
 - New Delhi  UniversitiesPress  2000 
 - 283p.:  24 cm. 
<br/><br/><label>ISBN: </label>8173712042 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Code Breaking
<br/><br/><label>Dewey Class. No.: </label>652.809