35 books • 8 series
The Illustrated a Brief History of Time
Georges et les secrets de l'univers
George and the Big Bang (George's Secret Key) (George's Secret Key to the Universe)
George's Cosmic Treasure Hunt UAB CD
George's Cosmic Treasure Hunt (George's Secret Key) (George's Secret Key to the Universe)
George's Secret Key to the Universe (George's Secret Key) (George's Secret Key to the Universe)
Run for Your Life
The Accidental Marathon
Fix Und Alle
Jaded
George and the Blue Moon (George's Secret Key, #5) (George's Secret Key to the Universe)