Columbia subject headings:
Choice (Psychology)--Fiction.
Fantasy fiction.
Future life--Fiction.
Libraries--Fiction.
Novels.
Regret--Fiction.
Science fiction.
Harvard subject headings:
Choice (Psychology)--Fiction.
Fantasy fiction
Future life--Fiction
Libraries--Fiction
Novels
Regret--Fiction.
Science fiction
Princeton subject headings:
Choice (Psychology)--Fiction.
Fantasy fiction.
Future life--Fiction.
Libraries--Fiction.
Regret--Fiction.
Science fiction.