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. Author manuscript; available in PMC: 2009 Sep 17.
Published in final edited form as: Environ Sci Technol. 2006 May 15;40(10):3168–3173. doi: 10.1021/es052426p

Figure 2.

Figure 2

Average concentration of nitrate concentrations in the Cedar River. The samples collected between 1996 and 2004 are the data described in this study. All other data is from Goolsby et al, 1999 (1).