Columbia subject headings:
Harvard subject headings:
Evolution in literature.
Lessing, Doris, 1919-2013--Criticism and interpretation.
Princeton subject headings:
Biology in literature.
Darwin, Charles, 1809-1882--Influence.
Evolution in literature.
Lessing, Doris, 1919-2013--Knowledge--Science.
Literature and science--United States--History--20th century.
Social Darwinism in literature.