TY  - BOOK
AU  - Alvarez, David J
TI  - Allied and axis signals intelligence in World War II
SN  - 9780714649580
U1  - 940.5485 ALV 
PY  - 2002///
CY  - London ; Portland, OR
PB  - F. Cass
KW  - World War, 1939-1945 - Cryptography
ER  -