AU  - HOLZER,DAVID
TI  - TOP SECRET SPY LETTER WRITING KIT
U1  - 793.73/HOL 
PY  - 2004///
CY  - ENGLAND
PB  - 2004 TOP THAT! PUBLISHING PLD.
KW  - LETTER WRITING
KW  - SECRET CODES
KW  - CRYPTOLOGY
KW  - CYRILLIC ALPHABET
KW  - CEASAR CODE
KW  - GRID CIPHER
KW  - PIGPEN CODE
KW  - POLYBIUS CODE
KW  - MORSE CODE
KW  - UNDERCOVER TECHNIQUES
N1  - NO ISBN GIVEN
ER  -