Columbia subject headings:
Harvard subject headings:
Germany (East)--Foreign relations--Germany (West)
Germany (West)--Foreign relations--Germany (East)
Germany--History--Unification, 1990.
Public law--Germany
Public law--Germany (East)
Public law--Germany (West)
Territory, National--Germany.
Princeton subject headings:
German reunification question (1949-1990)
Germany (East)--Foreign relations--Germany (West)
Germany (East)--History--Chronology.
Germany (West)--Foreign relations--Germany (East)
Germany (West)--History--Chronology.