Columbia subject headings:
Twentieth century--Forecasts.
United States--Civilization--1970-
United States--Politics and government--1945-1989.
United States--Social conditions--1960-1980.
Harvard subject headings:
Twentieth century--Forecasts
United States--Civilization--1970-
United States--Politics and government--1945-1989.
United States--Social conditions--1960-1980.
Princeton subject headings:
Twentieth century--Forecasts.
United States--Civilization--1970-
United States--Politics and government--1945-1989.
United States--Social conditions--1960-1980.