Columbia subject headings:
Harvard subject headings:
African Americans--Economic conditions
African Americans--Social conditions--1975-
United States--Economic conditions--1961-1971.
United States--Economic conditions--1971-1981.
United States--Social conditions--1960-1980.
Princeton subject headings:
African Americans--Economic conditions.
African Americans--Social conditions--1975-
United States--Economic conditions--1961-.
United States--Social conditions--1960-.