Beckman, Bengt. , <br/><br/>
Codebreakers :  Arne Beurling and the Swedish crypto program during world war II / 
Bengt Beckman. 
 - xviii, 259 pages :  illustrations ;  26 cm. 
<br/><br/><label>ISBN: </label>0821828894 
<br/><br/><label>Subjects--Topical Terms: </label><br/>World War, 1939-1945 --Cryptography.<br/>World War, 1939-1945 --Electronic intelligence--Sweden.
<br/><br/><label>LC Class. No.: </label>D810.C88   / .B42 2002