Unleashed
John Levitt
Dog Days (3)
The Unlearned
Raymond F. Jones
The Unlawful Hunter
Keith Taylor
Fal (1)
The Unknown
Christopher Anvil
Federation of Humanity (1)
Unknown Touch
Gina Marie Long
Werewolf (Gina Marie Long) (1)
The Unknown Soldier
Sean Williams & Shane Dix
Cogal (1)
The Unknown Shore
Donald Malcolm
Unknown Sector: Milky Way
Kurt Mahr
PR Zyklus 2: Atlan und Arkon (53)
Person(s) Unknown
Nancy A. Collins
Challengers of the Unknown
Ron Goulart
The Unkindest Cut
J. N. Williamson
University
Bentley Little
Peter Phillips
Universes
Robert F. Young
The Universe Twister
Keith Laumer
Lafayette O'Leary (1)
The Universe of Honor Harrington
David Weber
Honor Harrington Universe (99)
The Universe Maker / The World of Null-A
A. E. Van Vogt
The Universe Maker
The Universe Between
Alan E. Nourse
The Universe Between (1)
The Universe Against Her
James H. Schmitz
Telzey Amberdon (1)