Long, C. D. (1960). Wages and earnings in the United States 1860-1890. New York: Princeton University Press.
Παραπομπή Chicago StyleLong, Clarence D. Wages and Earnings in the United States 1860-1890. New York: Princeton University Press, 1960.
Παραπομπή MLALong, Clarence D. Wages and Earnings in the United States 1860-1890. New York: Princeton University Press, 1960.
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