TY  - BOOK
AU  - KLIMA, Richard E.
AU  - SIGMON, Neil P.
TI  - Cryptology: classical and modern with maplets
SN  - 9781439872413
U1  - 005.82 
PY  - 2012///
CY  - London
PB  - CRC Press
KW  - Ciphers 2.Cryptography 3.Cryptography--Data processing 4.Data encryption (Computer science)
N1  - Includes Index
ER  -