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Farewell - we're good and gone : the great Black migration
Marks, Carole, (1989)
Population estimates by race and Hispanic origin for states, metropolitan areas, and selected counties : 1980 to 1985
Word, David L., (1989)
Racial conflict and split labor markets : the AFL campaign to organize steel workers, 1918 - 1919
Brown, Benjamin Clifford, (1998)