TY  - BOOK
AU  - Blake,Barry J.
TI  - Secret language: [codes, tricks, spies, thieves, and symbols] 
SN  - 9780199579280
U1  - 417.7  
PY  - 2010///
CY  - Oxford
PB  - Oxford University Press
KW  - Historical linguistics
KW  - Ciphers
KW  - Cryptography
ER  -