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The Negro in the Farm Equipment and Construction Machinery Industries

F. Marion FletcherGordon Falk BloomRobert W. Ozanne

出版	Industrial Research Unit, Wharton School of Finance and Commerce, University of Pennsylvania, 1971
ISBN	08122906829780812290684
URL	http://books.google.com.hk/books?id=UWoOAQAAMAAJ&hl=&source=gbs_api