After Doomsday
Poul Anderson
Agent Of The Terran Empire
Avatar, The
The Boat of a Million Years
David Falkayn: Star Trader (Technic Civlization)
Ensign flandry
Genesis
The High Crusade
Inconstant star
Man-Kzin Wars (1)
The Man Kzin Wars (Man Kzin Wars, Book 1)
Larry Niven & Poul Anderson & Dean Ing
Operation Chaos
Operation Luna
Starfarers
The Stars Are Also Fire
Three Hearts & Three Lions
Three in time
Wilson Tucker & Poul Anderson & Chad Oliver