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Manures > Environmental aspects > United States
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Nitrogen fertilizers

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Current results range from 2013 to 2017

1.
County-level estimates of nitrogen and phosphorus from animal manure for the conterminous United States : 2007 and 2012
Author
Gronberg, JoAnn M.
Published
Reston, Virginia : U.S. Department of the Interior, U.S. Geological Survey, 2017.
Online
https://purl.fdlp.gov/GPO/gpo128289
Location
Yale Internet Resource >> None
Format
Books / Online
2.
County-level estimates of nitrogen and phosphorus from animal manure for the conterminous United States, 2002
Author
Mueller, David K.
Published
Reston, Virginia : U.S. Department of the Interior, U.S. Geological Survey, 2013.
Online
http://purl.fdlp.gov/GPO/gpo38641
Location
Yale Internet Resource >> None
Format
Books / Online