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1. Manganese and iron contents of bean leaf influenced by crop residues in no till-system (id:IND43758356)

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2. Phosphorus and zinc contents of bean leaf influenced by crop residues in no till-system (id:IND43758357)

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3. Visualization of a crop season : the integration of remotely sensed data and survey data (id:55327)

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4. Evaluation of historical data use in the 1992 August yield survey (id:28865)

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5. Comparison of sensors for corn and soybean planted area estimation (id:25438)

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6. An overview of the 1985 corn, cotton, soybean, and wheat objective yield surveys (id:28686)

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7. 1983 corn and soybean production input and cropping practices in Illinois, Iowa and Missouri (id:22157)

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8. Technical and economic causes of U.S. corn and soybean yield changes (id:27960)