Category - Non Fiction / Children's

Format - Hardcover

Condition - Good

Listed - Over 1 year ago

Views - 12

Wishes - 3

Ships From - Oregon

Est. Publication Date - May 1979

Publisher 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.