Columbia subject headings:
Berlin Wall, Berlin, Germany, 1961-1989.
German reunification question (1949-1990)
Germany (East)--Boundaries--Germany (West)
Germany (East)--History.
Germany (East)--Politics and government.
Germany (East)--Social conditions.
Germany (West)--Boundaries--Germany (East)
Harvard subject headings:
Berlin Wall, Berlin, Germany, 1961-1989
German reunification question (1949-1990)
Germany (East)--Boundaries--Germany (West)
Germany (East)--Politics and government.
Germany (West)--Boundaries--Germany (East)
Princeton subject headings:
Berlin Wall, Berlin, Germany, 1961-1989.
German reunification question (1949-1990)
Germany (East)--Boundaries--Germany (West)
Germany (East)--History.
Germany (East)--Politics and government.
Germany (East)--Social conditions.
Germany (West)--Boundaries--Germany (East)