Columbia subject headings:
Harvard subject headings:
Literary form
Science fiction, American--History and criticism.
Science fiction, English--History and criticism.
Science fiction, French--History and criticism.
Utopias in literature.
Voyages, Imaginary
Princeton subject headings:
Literary form.
Science fiction, American--History and criticism.
Science fiction, English--History and criticism.
Science fiction, French--History and criticism.
Utopias in literature.
Voyages, Imaginary.