books by subject
Puzzle Books for Children
Brain Boosters: Super-Smart Adding and Subtracting
Where's the Animal Poo? A Search and Find (Where's the Poo...?)
Amazing Picture Puzzles: Mazes, Mindbenders and More
Great World Search (Usborne Great Searches)
Big Book of Mazes (Maze Books)
The Jungle of Peril (Walker Gamebooks Skill Level 2)
Puzzling Poems To Drive You Crazy