TY  - BOOK
AU  - Miller, Marvin 
TI  - Codemaster book#1 : : How to write and decode secret messages 
SN  - 0439627176
AV  - Z 104 .M647 2003
PY  - 2003///
CY  - USA
PB  - Scholastic
N1  - G5; 780
ER  -