More codes for kids
By: Burton Albert, Jr. ; illustrated by Jerry Warshaw.
Contributors: Warshaw, Jerry.
Publisher: A. Whitman
Published: 1979
Place of publication: Chicago
Language: eng
Number of pages: 32
Subjects: Ciphers -- Juvenile literature; Ciphers
Description: 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.