The Folklore of Discworld
Terry Pratchett & Jacqueline Simpson
Brave New World
Aldous Huxley
Mars
Ben Bova
Universum (2)
Dune
Frank Herbert
The Science of Discworld III: Darwin's Watch
Terry Pratchett & Ian Stewart & Jack Cohen
The Science of Discworld (3)
The Science of Discworld II: The Globe
The Science of Discworld (2)