TY  - BOOK
AU  - Kippenhahn,Rudolf
TI  - Code breaking: a history and exploration 
SN  - 0879519193
AV  - Z103 .K5613 1999
U1  - 652.8/09 21
PY  - 1999///
CY  - New Delhi
PB  - University Press
KW  - Cryptography
KW  - History
N1  - Includes bibliographical references (p. [273]-275) and index
UR  - http://www.loc.gov/catdir/toc/fy034/98048791.html
ER  -