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