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Egg Price Relationships, 1962-68: Selected Markets, Trading Levels, Grades, Sizes
George Burnet RogersFrederic Lewis FaberRuth J. Irvin
出版Economic Research Service, U.S. Department of Agriculture, 1970
URLhttp://books.google.com.hk/books?id=C3wWAAAAYAAJ&hl=&source=gbs_api
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