Astronomy Hacks: Tips and Tools for Observing the Night Sky
Robert Bruce Thompson
Out of the Stars: A Military Sci-Fi Series
Jake Bible
Out of the Earth (4)
Starship Troopers
Robert A. Heinlein
Stealing Worlds
Karl Schroeder
The World of Poo
Terry Pratchett
Discworld (39.50)
The Worldship Humility
R.R. Haywood
The Code Trilogy (1)
Wyrd Sisters
Discworld (6)