Columbia subject headings:
Harvard subject headings:
Europe--Foreign relations--Germany.
German reunification question (1949-1990)
Germany--Foreign relations--Europe.
Germany--History--1789-1900.
Germany--History--20th century.
Princeton subject headings:
Europe--Foreign relations--Germany.
German reunification question (1949-1990)
Germany--Foreign relations--Europe.
Germany--History--1789-1900.
Germany--History--20th century.