Columbia subject headings:
Harvard subject headings:
Braunschweig (Germany)--History--20th century--Exhibitions.
Princeton subject headings:
Braunschweig (Germany)--History--20th century--Exhibitions.
Braunschweig (Germany)--History--20th century--Pictorial works--Exhibitions.
Braunschweig (Germany)--Politics and government--20th century--Exhibitions.