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Displaying 1-2 of 2 results for author "Gronberg, JoAnn M."
County-level estimates of nitrogen and phosphorus from commercial fertilizer for the conterminous United States, 1987-2006 / by Jo Ann M. Gronberg and Norman E. Spahr.
- Text
- Reston, Va. : U.S. Dept. of the Interior, U.S. Geological Survey, 2012.
- 2012
- 1 Resource
Available Online
https://purl.fdlp.gov/GPO/gpo33764Estimates of inorganic nitrogen wet deposition form precipitation for the conterminous United States, 1955-84 / by Jo Ann M. Gronberg, Amy S. Ludtke, and Donna L. Knifong.
- Text
- Reston, Virginia : U.S. Department of the Interior, U.S. Geological Survey, 2014.
- 2014
- 1 Resource
Available Online
https://purl.fdlp.gov/GPO/gpo185863
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