TY  - GEN
AU  - Klima,Richard E.
AU  - Sigmon, Neil P.
ED  - 
ED  - 
ED  - 
TI  - Cryptology: classical and modern with maplets
SN  - 9781439872413
U1  - 005.82 
PY  - 2012///
CY  - Boca Raton
PB  - CRC Press
KW  - 
KW  - Mathematics
ER  -