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Barriers to Internal Trade in Farm Products

United States. Bureau of Agricultural EconomicsEdgar Lewis BurtisGeorge Rogers TaylorFrederick Vail Waugh

出版	U.S. Government Printing Office, 1939
URL	http://books.google.com.hk/books?id=dpsvAAAAYAAJ&hl=&source=gbs_api
EBook	FULL_PUBLIC_DOMAIN