Columbia subject headings:
Bayreuther Festspiele.
Music festivals--Germany.
Opera producers and directors--Germany--Biography.
Wagner, Wolfgang, 1919-2010.
Harvard subject headings:
Bayreuther Festspiele.
Opera producers and directors--Germany--Bayreuth--Biography.
Opera producers and directors--Germany--Biography.
Wagner, Wolfgang, 1919-2010.
Princeton subject headings:
Bayreuther Festspiele.
Opera producers and directors--Germany--Biography.
Wagner, Wolfgang, 1919-2010.