Major Operation
James White
Sector General (3)
The Castle of Llyr
Lloyd Alexander
The Prydain Chronicles (3)
The Gates of Creation
Philip José Farmer
The World of Tiers (2)
Riverworld
Riverworld (1)
The Moon Is a Harsh Mistress
Robert A. Heinlein
The Mask of Apollo
Mary Renault
Greece (5)
Dune
Frank Herbert
Dune (1)
Tiger Green
Gordon R. Dickson
Year of the Unicorn
Andre Norton
High Hallack (2)
The Shape of Space
Larry Niven
Known Space (1)
A Plague of Pythons
Frederik Pohl
World of Ptavvs