Columbia subject headings:
Conference on Security and Cooperation in Europe (1972-1975 : Helsinki, Finland)
Germany (East)--Foreign relations--Germany (West)
Germany (West)--Foreign relations--Germany (East)
National security--Germany (East)
National security--Germany (West)
Harvard subject headings:
Conference on Security and Cooperation in Europe (1972 : Helsinki, Finland)
Germany (East)--Foreign relations--Germany (West)
Germany (West)--Foreign relations--Germany (East)
National security--Germany (East)
National security--Germany (West)
Princeton subject headings:
Conference on Security and Cooperation in Europe (1972-1975 : Helsinki, Finland)
Europe--Politics and government--1945-
German reunification question (1949-1990)
Germany--Politics and government--1945-1990.