Columbia subject headings:
Germany--History--Unification, 1990--Economic aspects.
Germany--History--Unification, 1990--Political aspects.
Germany--History--Unification, 1990.
Harvard subject headings:
Germany--History--Unification, 1990.
Princeton subject headings:
Germany--History--Unification, 1990--Economic aspects.
Germany--History--Unification, 1990--Political aspects.
Germany--History--Unification, 1990.