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The top documents tagged [soils of grassland ecosystems]
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1 Corn and soybean production. 2 NASS US Select Crop Value 2006 Billions of Dollars OatsBarleySor- ghum WheatSoy- bean Corn $0.9 $0.2 $7.7 $19.7 $33.8
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Soils of Rangelands
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Prairie Soils
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