Columbia subject headings:
Conference on Security and Cooperation in Europe, (1975 : Helsinki)
Yugoslavia--Foreign relations--1945-1980.
Harvard subject headings:
Conference on Security and Cooperation in Europe (1972 : Helsinki, Finland)
Conference on Security and Cooperation in Europe (1975 : Helsinki, Finland)
Yugoslavia--Foreign relations--1945-
Yugoslavia--Foreign relations--1945-1980.
Princeton subject headings: