Training For Trouble
Franklin W. Dixon
The Hardy Boys Mystery Stories (161)
Wolfhowl Mountain
Dian Cronan
Embattled Christmas: A Lost and Found Series Novella
J. M. Madden
Allegiant
Veronica Roth
Divergent (3)
The Theory of Everything: The Origin and Fate of the Universe
Stephen W. Hawking
Star Maker
Olaf Stapledon
The Nature of Space and Time
Stephen W. Hawking & Roger Penrose
Dark Matter and Cosmic Web Story
Jaan Einasto
Cosm
Gregory Benford
A Brief History of Time: From the Big Bang to Black Holes