Columbia subject headings:
Harvard subject headings:
Berlin (Germany)--Politics and government--1945-1990--Pictorial works.
Berlin Wall, Berlin, Germany, 1961-1989--Pictorial works
Communism--Germany (East)--Pictorial works.
Princeton subject headings:
Berlin (Germany)--Politics and government--Pictorial works.
Berlin Wall, Berlin, Germany, 1961-1989--Pictorial works.
Communism--Germany (East)--Pictorial works.