Columbia subject headings:
Harvard subject headings:
Deutsches Theater (Berlin, Germany)--Congresses.
Greek drama (Tragedy)--Appreciation--Germany--Congresses.
Theater--Germany--History--Congresses.
Princeton subject headings:
Deutsches Theater (Berlin, Germany)--Congresses.
Greek drama (Tragedy)--Appreciation--Germany--Congresses.
Theater--Germany--History--Congresses.