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 | International Programs |
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| AB |
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| AR |
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| BC |
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 | CO |
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| CO-09F | Phosphorus Soil Test Calibration Using Landscape Spatial Variability | |
| CO-10F | Potassium Needs of High-yielding Alfalfa on the West Slope of Colorado | |
| CO-11F | Long-term Phosphorus Fertilization of No-till Dryland Intensive Cropping Systems | |
| CO-12F | Spatial Removal of Nutrients by Corn | |
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| DE |
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| GA |
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| ID |
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| IN |
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| KS |
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| LA |
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| MD |
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| MI |
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