Columbia subject headings:
Didactic fiction, American--History and criticism.
Didactic fiction, English--History and criticism.
Ethics in literature.
Lawrence, D. H. (David Herbert), 1885-1930--Ethics.
Steinbeck, John, 1902-1968--Ethics.
Harvard subject headings:
Didactic fiction, American--History and criticism.
Didactic fiction, English--History and criticism.
Ethics in literature.
Lawrence, D. H. (David Herbert), 1885-1930--Ethics.
Steinbeck, John, 1902-1968--Ethics.
Princeton subject headings:
Lawrence, D. H. (David Herbert), 1885-1930.
Steinbeck, John, 1902-1968.