Estimation of anthropogenic nitrogen and phosphorus inputs to the land surface of the conterminous United States--1992,1997, and 2002
By: by Lori A. Sprague and Jo Ann M. Gronberg
Contributors: Gronberg, JoAnn M., author; Geological Survey (U.S.)
Series: Scientific investigations report -- 2013-5241
Publisher: U.S. Department of the Interior, U.S. Geological Survey
Published: 2013
Place of publication: Reston, Virginia
Language: eng
Number of pages: 14
Subjects: Nature; Effect of human beings on; Soils; Nitrogen content; Water; Phosphorus content
Other titles: Estimated anthropogenic nitrogen and phosphorus inputs to the land surface of the conterminous United States--1992, 1997, and 2002
Notes: Title from title screen (viewed Feb. 11, 2013).

"National Water-Quality Assessment Program."

Includes bibliographical references (pages 12-14).