National Soils Monitoring Program - Six States, 1967

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Citation

Wiersma, G. B., P. F. Sand, and R. L. Schultzmann. 1971. “National Soils Monitoring Program - Six States, 1967.” Special Collections, USDA National Agricultural Library. Accessed February 28, 2024, https://www.nal.usda.gov/exhibits/speccoll/items/show/2200.