Kellor, F. (1915). Out of work: A study of unemployment. Putnam.
Dyfyniad Arddull ChicagoKellor, Frances. Out of Work: A Study of Unemployment. New York, London: Putnam, 1915.
Dyfyniad MLAKellor, Frances. Out of Work: A Study of Unemployment. Putnam, 1915.
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