Big O Numbers, Medium To Hard Puzzles : Sudoku Large Print for Adults Edition Paperback – Large Print, 15 Feb 2017

الوصف

About the Author The Brain is a muscle and must be exercised at any age. Without exercise the brain will become lazy and is at increased risk of disease. Through interactive games, Puzzle Pulse books will get the brain going and elevate its function and performance, while providing hours of cost efficient entertainment.