Masterman, J. C.  1891- <br/><br/>
The double-cross system in the war of 1939 to 1945 / 
by J. C. Masterman. 
 - Canberra :  Aust.,Nat.,University,  1972. 
 - xxi, 203 p. 
<br/><br/><label>ISBN: </label>0708104592 
<br/><br/><label>Subjects--Topical Terms: </label><br/>World War, 1939-1945--Secret service--Great Britain.