TY  - BOOK
AU  - Khan, David
AU  - Khan, David
TI  - The Codebreakers :The Comprehensive History of Secret Communication from ancient times
SN  - 9780684831305
U1  - 652?.8 KHA/THE 
PY  - 1996///
CY  - Hemingway
PB  - Scribner
KW  - COMPUTER SCIENCE AND ENGINEERING
ER  -