Strumph-Wojtkiewicz, Stanisław. <br/><br/>
Sekret Enigmy / 
Stanisław Strumph Wojtkiewicz. 
 - Warszawa :  "Iskry",  1978 
 - 157, [3] p., [4] leaves of plates :  ill. ;  20 cm. 
<br/><br/><label>LCCN: </label>78366387  
<br/><br/><label>Nat. Bib. No.: </label>P78-729 
<br/><br/><label>Subjects--Topical Terms: </label><br/>World War, 1939-1945--Cryptography.<br/>World War, 1939-1945--Secret service.
<br/><br/><label>LC Class. No.: </label>D810.C88  / S77