Columbia subject headings:
African Americans--Pennsylvania--Pittsburgh--Economic conditions.
African Americans--Pennsylvania--Pittsburgh--Social conditions.
Pittsburgh (Pa.)--Economic conditions.
Pittsburgh (Pa.)--Social conditions.
Rural-urban migration--United States.
Harvard subject headings:
African Americans--Pennsylvania--Pittsburgh--Economic conditions.
African Americans--Pennsylvania--Pittsburgh--Social conditions.
Pittsburgh (Pa.)--Economic conditions.
Pittsburgh (Pa.)--Social conditions.
Rural-urban migration--United States
Princeton subject headings:
African Americans--Pennsylvania--Pittsburgh--Economic conditions.
African Americans--Pennsylvania--Pittsburgh--Social conditions.
Pittsburgh (Pa.)--Economic conditions.
Pittsburgh (Pa.)--Social conditions.
Rural-urban migration--United States.