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Reflections on 200 years of Nitrogen, 20 years later: This article belongs to Ambio’s 50th Anniversary Collection. Theme: Eutrophication |
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| Authors: | James N Galloway Ellis B Cowling |
| Institution: | 1.Sidman P. Poole Professor, Environmental Sciences Department, University of Virginia, P.O. Box 400123, Charlottesville, VA 22904 USA ;2.University Emeritus Professor-at-Large, North Carolina State University, 5211 Glenhope Court, Cary, NC 27511 USA |
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