TY  - BOOK
AU  - Klima Richard E
AU  - Sigmon Neil P
TI  - Cryptology: classical and modern with maplets
SN  - 978-1-4398-7241-3
U1  - 005.82 
PY  - 2012///
CY  - Boca Raton
PB  - CRC Press
KW  - Ciphers
KW  - Cryptography
KW  - Cryptography-data processing
KW  - Data encryption (Computer science)
ER  -