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Date: 2013-01-04 14:19:48Soil science Energy crops Staple foods Crops Agronomy No-till farming Tillage Soybean Maize Agriculture Agricultural soil science Food and drink | November2A09 Volume38, No.11 www.n o-tiIIfarm er,com -t 1JAdd to Reading ListSource URL: www.thehowardgbuffettfoundation.orgDownload Document from Source WebsiteFile Size: 1,61 MBShare Document on Facebook |