The Star Venturers
Kenneth Bulmer
The Wizard of Starship Poseidon
To Outrun Doomsday
Cycle of Nemesis
Land Beyond the Map
Keys to the Dimensions (1)
The Wizards of Senchuria
Keys to the Dimensions (3)
The Key to Venudine
The Key to Irunium
Worlds for the Taking
Behold the Stars