TY  - BOOK
AU  - Sam
AU  - Epstein, Beryl
AU  - Roth,Laszlo
TI  - The First Book of Codes and Ciphers
U1  - 652.8 
PY  - 1956///
CY  - United States
PB  - Franklin Watts,Inc.
KW  - Processes of written communication
ER  -