Columbia subject headings:
United States--Civilization--1970-
United States--Politics and government--1945-1989.
World politics--1945-1989.
Harvard subject headings:
United States--Civilization--1970-
United States--Politics and government--1945-1989.
World politics--1945-
World politics--1945-1989
Princeton subject headings:
United States--Civilization--1970-
United States--Politics and government--1945-1989.
World politics--1945-1989.