Columbia subject headings:
United States--Civilization--1945-
United States--Civilization--1970-
United States--Social conditions--1945-
Harvard subject headings:
United States--Civilization--1945-
United States--Civilization--1970-
United States--Social conditions--1945-
United States--Social conditions--1960-1980.
Princeton subject headings:
United States--Civilization--1945-
United States--Civilization--1970-
United States--Social conditions--1945-1970.
United States--Social conditions--1970-.