Columbia subject headings:
African Americans--Economic conditions--Statistics.
African Americans--Economic conditions.
African Americans--Social conditions--Statistics.
African Americans--Social conditions.
Harvard subject headings:
African Americans--Economic conditions
African Americans--Economic conditions--Statistics.
African Americans--Social conditions
African Americans--Social conditions--Statistics.
Princeton subject headings:
African Americans--Economic conditions--Statistics.
African Americans--Economic conditions.
African Americans--Social conditions--Statistics.
African Americans--Social conditions.