TY  - BOOK
AU  - Klima,Richard E.
AU  - Sigmon,Neil P.
TI  - Cryptology: classical and modern with maplets 
T2  - Discrete mathematics and its applications
SN  - 9781439872413 (hardcover : alk. paper)
PY  - 2012///
CY  - Boca Raton, FL
PB  - CRC Press
KW  - Cryptography
KW  - Data processing
KW  - Data encryption (Computer science)
KW  - Ciphers
N1  - "A Chapman & Hall book."; Includes bibliographical references and index
ER  -