Columbia subject headings:
O'Neill, Eugene, 1888-1953--Appreciation--Germany.
O'Neill, Eugene, 1888-1953--Stage history--Germany.
Theater--Germany--History--20th century.
Harvard subject headings:
O'Neill, Eugene, 1888-1953--Appreciation--Germany.
O'Neill, Eugene, 1888-1953--Stage history--Germany.
Theater--Germany--History--20th century.
Princeton subject headings:
O'Neill, Eugene, 1888-1953--Appreciation--Germany.
O'Neill, Eugene, 1888-1953--Stage history--Germany.
Theater--Germany--History--20th century.