TY  - BOOK
AU  - Lewin,Ronald
TI  - Ultra goes to war: the first account of World War II's greatest secret based on official documents 
SN  - 0070374538 :
AV  - D810.S7 L43 1978
U1  - 940.54/86 
PY  - 1978///
CY  - New York
PB  - McGraw-Hill
KW  - World War, 1939-1945
KW  - Secret service
KW  - Great Britain
N1  - Includes index; Bibliography: p. 379-383
ER  -