Columbia subject headings:
Harvard subject headings:
Potsdam (Germany)--History--20th century.
Social change--Germany--Potsdam.
Squatters--Germany--Potsdam--History--20th century.
Subculture--Germany--Potsdam--History--20th century.
Princeton subject headings:
Potsdam (Germany)--History--20th century.
Social change--Germany--Potsdam.
Squatters--Germany--Potsdam--History--20th century.
Subculture--Germany--Potsdam--History--20th century.