Columbia subject headings:
O'Neill, Eugene, 1888-1953--Criticism and interpretation.
O'Neill, Eugene, 1888-1953--Stage history--Germany.
Harvard subject headings:
O'Neill, Eugene, 1888-1953--Criticism and interpretation.
O'Neill, Eugene, 1888-1953--Stage history--Germany.
Princeton subject headings:
O'Neill, Eugene, 1888-1953--Criticism and interpretation.
O'Neill, Eugene, 1888-1953--Stage history--Germany.