TY  - BOOK
AU  - Albert,Burton
AU  - Warshaw,Jerry
TI  - More codes for kids
SN  - 0807552704 (lib. bdg.) : :
AV  - Z103.3 .A535
U1  - 001.54/36 
PY  - 1979///
CY  - Chicago
PB  - A. Whitman
KW  - Ciphers
KW  - Juvenile literature
N2  - More codes for cryptanalysts to crack, many with jokes or riddles for answers. Includes, among others, a Code-a-Nut Tree and Back-Flip Triple Decker codes
ER  -