Lebergott, S. (1964). Manpower in economic growth ;: The american record since 1800. New York: Mc Graw-Hill.
Παραπομπή Chicago StyleLebergott, Stanley. Manpower in Economic Growth ;: The American Record Since 1800. New York: Mc Graw-Hill, 1964.
Παραπομπή MLALebergott, Stanley. Manpower in Economic Growth ;: The American Record Since 1800. New York: Mc Graw-Hill, 1964.
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