Seth, Ronald <br/><br/>
Unmasked! :  the story of Soviet Espionage / 
by Ronald Seth. 
 - 1st American ed 
 - New York :  Hawthorn Books, Inc,  1965. 
 - 306 p., [7] :  ill., plates ;  23 cm. 
<br/><br/> With hard-and supercover  Includes index 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Espionage, Soviet