TY  - GEN
AU  - Kahn,David
TI  - The Codebreakers: The story of secret writing
SN  - 0684831309 (alk. paper)
U1  - 652.8 
PY  - 1996///
CY  - New York
PB  - Scribner
KW  - Cryptography
KW  - History
N1  - Contine Bibliografie si Index
UR  - http://www.loc.gov/catdir/bios/simon051/96031318.html
UR  - http://www.loc.gov/catdir/description/simon031/96031318.html
UR  - http://www.loc.gov/catdir/enhancements/fy0640/96031318-s.html
ER  -