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Dyfyniad Arddull ChicagoDay, Phyllis J. A New History of Social Welfare. Boston, Mass: Allyn & Bacon, 1997.
Dyfyniad MLADay, Phyllis J. A New History of Social Welfare. Boston, Mass: Allyn & Bacon, 1997.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.