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An Economic Analysis of the Impact of Government Programs on the Potato Industry of the United States. [By] R.W. Gray, Vernon L. Sorenson, and Willard W. Cochrane ... North Central Regional Publication No. 42

Roger W. GRAY

出版	1954
URL	http://books.google.com.hk/books?id=k-QAMwEACAAJ&hl=&source=gbs_api