TY  - BOOK
AU  - Welchman,Gordon
TI  - The Hut Six story: breaking the Enigma codes 
SN  - 0070691800
AV  - D810.C88 W44
U1  - 940.54/86/41 19
PY  - 1982///
CY  - New York
PB  - McGraw-Hill
KW  - Welchman, Gordon.
KW  - World War, 1939-1945
KW  - Cryptography
KW  - Secret service
KW  - Great Britain
KW  - Personal narratives, British
KW  - World War, 1939-1945 -- Personal narratives, British
N1  - Includes index; Bibliography: p. 315-317
ER  -