Columbia subject headings:
Drama--21st century--History and criticism--Congresses.
German drama--21st century--History and criticism--Congresses.
Theater--Europe, German-speaking--History--21st century--Congresses.
Theater--History--21st century--Congresses.
Youths' writings, German--21st century--Congresses.
Youths' writings--21st century--Congresses.
Harvard subject headings:
Drama--21st century--History and criticism--Congresses.
German drama--21st century--History and criticism--Congresses.
Theater--Europe, German-speaking--History--21st century--Congresses.
Theater--Germany--History--21st century--Congresses.
Theater--History--21st century--Congresses.
Youths' writings, German--21st century--Congresses.
Youths' writings--21st century--Congresses.
Princeton subject headings:
Drama--21st century--History and criticism--Congresses.
German drama--21st century--History and criticism--Congresses.
Theater--Germany--History--21st century--Congresses.
Theater--History--21st century--Congresses.
Youths' writings, German--21st century--Congresses.
Youths' writings--21st century--Congresses.