TY  - BOOK
AU  - Singh, Simon
TI  - Code book : science of secrecy from ancient Egypt to quantum cryptography
SN  - 9780385495325
U1  - 652.809 SIN-S 
PY  - 1999///
CY  - NY
PB  - Anchor books
KW  - ﾠ
KW  - Data encryption (Computer science) --Historyﾠ
KW  - Cryptography --Historyﾠ
ER  -