Corn and Soybean Yields in the United States, 1950-2009. Courtesy of Earth Policy Institute.
Corn and Soybean Yields in the United States, 1950-2009. Courtesy of Earth Policy Institute.
January 26, 2011 Leave a Comment
Celebrating Constancy and Diversity in the Mississippi Delta
Corn and Soybean Yields in the United States, 1950-2009. Courtesy of Earth Policy Institute.
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