More codes for kids /
Albert, Burton.
More codes for kids / Burton Albert, Jr. ; illustrated by Jerry Warshaw. - Chicago : A. Whitman, c1979. - 32 p. : col. ill. ; 24 cm.
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.
0807552704 (lib. bdg.) : : $5.50
79000245 79000245
Ciphers--Juvenile literature.
Ciphers.
Z103.3 / .A535
001.54/36
More codes for kids / Burton Albert, Jr. ; illustrated by Jerry Warshaw. - Chicago : A. Whitman, c1979. - 32 p. : col. ill. ; 24 cm.
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.
0807552704 (lib. bdg.) : : $5.50
79000245 79000245
Ciphers--Juvenile literature.
Ciphers.
Z103.3 / .A535
001.54/36