books by subject
Puzzles
Take Five: 134 Language Games, Puzzles and Activities (ELT Teachers Resource Materials)
Geography Quizbook (Usborne Quizbooks S.)
Puzzle Journey Into Space (Puzzle Journeys)
Young Puzzle Adventures
Dragon in the Cupboard (Usborne Young Puzzle Adventures)
Quiz Quest: Search for the Facts and Put Your Knowledge to the Test (Quiz Book)
Top Secret - A Handbook of Codes, Ciphers and Secret Writing
Puzzle Island (Child's Play Library)
