Columbia subject headings:
Science fiction, English--History and criticism.
Stapledon, Olaf, 1886-1950--Criticism and interpretation.
Harvard subject headings:
Science fiction, English--History and criticism.
Stapledon, Olaf, 1886-1950--Criticism and interpretation.
Princeton subject headings:
Science fiction, English--History and criticism.
Stapledon, Olaf, 1886-1950--Criticism and interpretation.