Columbia subject headings:
Berlin (Germany)--Politics and government--1945-1990.
Berlin Wall, Berlin, Germany, 1961-1989.
German reunification question (1949-1990)
Germany (East)--Foreign relations--Germany (West)
Germany (East)--Foreign relations--Soviet Union.
Germany (East)--Politics and government.
Germany (West)--Foreign relations--Germany (East)
Soviet Union--Foreign relations--Germany (East)
Sozialistische Einheitspartei Deutschlands--History.
Harvard subject headings:
Berlin (Germany)--Politics and government--1945-1990
Berlin Wall, Berlin, Germany, 1961-1989
German reunification question (1949-1990)
Germany (East)--Foreign relations--Germany (West)
Germany (East)--Foreign relations--Soviet Union.
Germany (East)--Politics and government.
Germany (West)--Foreign relations--Germany (East)
Soviet Union--Foreign relations--Germany (East)
Sozialistische Einheitspartei Deutschlands--History.
Princeton subject headings:
Berlin (Germany)--Politics and government--1945-1990.
Berlin Wall, Berlin, Germany, 1961-1989.
German reunification question (1949-1990)
Germany (East)--Foreign relations--Germany (West)
Germany (East)--Foreign relations--Soviet Union.
Germany (East)--Politics and government.
Germany (West)--Foreign relations--Germany (East)
Soviet Union--Foreign relations--Germany (East).
Sozialistische Einheitspartei Deutschlands--History.