Columbia subject headings:
Harvard subject headings:
Brandenburg (Germany : State)--Administrative and political divisions--History--20th century.
Brandenburg (Germany : State)--Boundaries--History--20th century.
Brandenburg (Germany : State)--Politics and government--20th century.
Princeton subject headings:
Brandenburg (Germany : State)--Administrative and political divisions--History--20th century.
Brandenburg (Germany : State)--Boundaries--History--20th century.
Brandenburg (Germany : State)--Politics and government--20th century.