TY  - BOOK
AU  - Masterman,J.C.
TI  - The double-cross system in the war of 1939 to 1945
SN  - 0300014961
PY  - 1972///
CY  - New Haven
PB  - Yale University Press
KW  - World War
KW  - 1939-1945
KW  - Secret service
KW  - United Kigdom
ER  -