Columbia subject headings:
United States--Foreign relations--1945-1953.
United States--Foreign relations--1945-1989.
World politics--1945-
World politics--1945-1989.
Harvard subject headings:
United States--Foreign relations--1945-
United States--Foreign relations--1945-1953.
World politics--1945-
World politics--1945-1955
Princeton subject headings:
United States--Foreign relations--1945-.
World politics--1945-1989.