Invasione Silenziosa
Sarah Zettel
Urania (1513)
Beggar Queen
Lloyd Alexander
Westmark Trilogy (3)
Davy e oltre
Edgar Pangborn
Urania (1034)
La foiba grande
Carlo Sgorlon
Foundation and Chaos
Isaac Asimov & Greg Bear
Second Foundation (2)
Foundation's Fear
Isaac Asimov & Gregory Benford
Second Foundation (1)
Foundation's Triumph
Isaac Asimov & David Brin
Second Foundation (3)