TY  - GEN
AU  - Churchhouse,R.F.
TI  - Codes and ciphers: Julius Caesar, the Enigma and the internet: Julius Caesar, the Enigma and the internet
SN  - 0521008905
U1  - 652.8 
PY  - 2002///
CY  - Cambridge, New York
PB  - Cambridge University Press
KW  - Cryptography
KW  - Ciphers
ER  -