Columbia subject headings:
African Americans--Economic conditions.
African Americans--Population.
African Americans--Social conditions--1975-
Quality of life--United States.
United States--Population.
Harvard subject headings:
African Americans--Economic conditions
African Americans--Population.
African Americans--Social conditions--1975-
Quality of life--United States
United States--Population.
Princeton subject headings:
African Americans--Economic conditions.
African Americans--Population.
African Americans--Social conditions--1975-
Quality of life--United States.
United States--Population.