George's Secret Key Hardcover Collection: George's Secret Key to the Universe; George's Cosmic Treasure Hunt; George and the Big Bang; George and the

by Lucy Hawking and Stephen Hawking

Join George and Annie as they explore the galaxy in this cosmic adventure series from acclaimed scientist Stephen Hawking and his daughter Lucy Hawking. This four-book collection includes: George's Secret Key to the Universe George's Cosmic Treasure Hunt George and the Big Bang George and the Unbreakable Code

• Format: Hardcover
• Language: English
• ISBN: 1481487221
• ISBN13: 9781481487221
• Release Date: September 2016
• Publisher: Simon & Schuster Books for Young Readers
• Length: 1280 Pages
• Weight: 4.45 lbs.
• Dimensions: 4.6" x 6.5" x 9.0"
• Age Range: 8 to 12 years
• Grade Range: Grades 3 to 7