Columbia subject headings:
Berlin (Germany)--Politics and government.
Bonn (Germany)--Politics and government.
Germany--Capital and capitol.
Germany--Politics and government--1990-
Harvard subject headings:
Berlin (Germany)--Politics and government
Bonn (Germany)--Politics and government.
Germany--Capital and capitol.
Germany--Politics and government--1990-
Princeton subject headings:
Bonn (Germany)--History--1990-.
Capitals (Cities)
Germany--Capital and capitol--History--1990-.
Germany--History--Unification, 1990.