TY  - BOOK
AU  - Moore,Dan Tyler
AU  - Waller,Martha
TI  - Cloak & cipher 
U1  - 652.8 MOO W 
PY  - 1965///.
CY  - London : 
PB  - George G. Harrap & Co. Ltd., 
KW  - Ciphers
KW  - Cryptography
KW  - Cryptographers
ER  -