Gateway to limbo /
Lampton, Chris.
Wilson, F. Paul(Francis Paul).Wheels within wheels.
Wold, Allen L.Planet masters.
London Sidgwick & Jackson
1981
Gateway to limbo originally published: Garden City, NY : Doubleday, 1979 ; London : Sidgwick and Jackson, 1980 - Wheels within wheels originally published: Garden City, NY : Doubleday, 1978 ; London : Sidgwick and Jackson, 1980 - The planet masters originally published: New York : St.Martin's Press, 1979 ; London : Sidgwick and Jackson, 1980