Kippenhahn,Rudolf <br/><br/>
Code breaking : a history and exploration 

 - 1st Ed. 
 - New Delhi  University Science Press  1999 
 - 283 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Computer Engineering
<br/><br/><label>Dewey Class. No.: </label>5  / KI-C