TY  - BOOK
AU  - Singh,Simon
TI  - The Code Book: The Evolution of Secrecy from Mary, Queen of Scots, to quantum cryptography 
SN  - 9781857028799
AV  - Z103 .S56 1999
U1  - 652.809 21
PY  - 1999///
CY  - New York
PB  - Doubleday
KW  - Cryptography
KW  - History
KW  - Data encryption (Computer science)
N1  - Includes bibliographical references (p. 388-393) and index
UR  - http://www.loc.gov/catdir/bios/random051/99035261.html
UR  - http://www.loc.gov/catdir/samples/random051/99035261.html
UR  - http://www.loc.gov/catdir/description/random0415/99035261.html
ER  -