Columbia subject headings:
Harvard subject headings:
Berlin (Germany)--Buildings, structures, etc.--Exhibitions.
Berlin (Germany)--Politics and government--1945-1990--Exhibitions.
Berlin Wall, Berlin, Germany, 1961-1989--Exhibitions.
Berlin Wall, Berlin, Germany, 1961-1989--Pictorial works--Exhibitions.
Germany--History--Unification, 1990--Exhibitions.
Historic sites--Germany--Berlin--Exhibitions.
Princeton subject headings:
Berlin (Germany)--Buildings, structures, etc.--Exhibitions.
Berlin (Germany)--Politics and government--1945-1990--Exhibitions.
Berlin Wall, Berlin, Germany, 1961-1989--Exhibitions.
Berlin Wall, Berlin, Germany, 1961-1989--Pictorial works--Exhibitions.
Germany--History--Unification, 1990--Exhibitions.
Historic sites--Germany--Berlin--Exhibitions.