Columbia subject headings:
American drama--Psychological aspects.
O'Neill, Eugene, 1888-1953--Criticism and interpretation.
O'Neill, Eugene, 1888-1953.
Harvard subject headings:
American drama--Psychological aspects
O'Neill, Eugene, 1888-1953--Criticism and interpretation.
Princeton subject headings:
American drama--Psychological aspects.
O'Neill, Eugene, 1888-1953--Criticism and interpretation.