Greybeard
Brian W. Aldiss
Barefoot in the Head
The Book of Three
Lloyd Alexander
The Prydain Chronicles (1)
The Black Cauldron
The Prydain Chronicles (2)
The Castle of Llyr
The Prydain Chronicles (3)
Taran Wanderer
The Prydain Chronicles (4)
The High King
The Prydain Chronicles (5)
Brain Wave
Poul Anderson
The Escape
Tau Zero
Macroscope
Piers Anthony
The Gods Themselves
Isaac Asimov