Cadetti dello spazio
Robert A. Heinlein
The Lady of the Rivers
Philippa Gregory
The Cousins' War (3)
The White Princess
The Cousins' War (5)
Out of the Stars: A Military Sci-Fi Series
Jake Bible
Out of the Earth (4)
The Roads Must Roll
Future History or "Heinlein Timeline" (3)
Ordeal in Space
Future History or "Heinlein Timeline" (15)