Box-plots of Stream Sediment Chemistry by Population Density
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Cu Pb Zn Hg
Direct questions and comments to:
Gilpin R. Robinson
U.S. Geological Survey
Email grobinso@usgs.gov
Phone (703)-648-6113
U.S. Department of the Interior, U.S. Geological Survey
URL: http://pubs.usgs.gov/of/2004/1026/FIGURES/pop_8.htm
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Last modified: 13:38:17 Tue 15 Aug 2006
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