County-level estimates of nitrogen and phosphorus fertilizer use in the United States, 1945 to 1985 (Q88765)

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County-level estimates of nitrogen and phosphorus fertilizer use in the United States, 1945 to 1985; 1990; OFR; 90-130; Alexander, Richard B.; Smith, Richard A.
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County-level estimates of nitrogen and phosphorus fertilizer use in the United States, 1945 to 1985
County-level estimates of nitrogen and phosphorus fertilizer use in the United States, 1945 to 1985; 1990; OFR; 90-130; Alexander, Richard B.; Smith, Richard A.

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