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Unemployment and Increasing Productivity

David WeintraubHarold L. PosnerUnited States. Works Progress Administration

出版	Works Progress Administration, National Research Project on Reemployment Opportunities and Recent Changes in Industrial Techniques, 1937
URL	http://books.google.com.hk/books?id=5pK7vUn3sD4C&hl=&source=gbs_api
EBook	FULL_PUBLIC_DOMAIN