Barker, Wayne G. <br/><br/>
Cryptanalysis of the Hagelin Cryptograph  

 - California  Aegean Park Press  c1977 
 - xi,233,p:  ill:  26,cm. 
<br/><br/><label>ISBN: </label>089120220 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Cryptography
<br/><br/><label>Dewey Class. No.: </label>005.82BAR