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2016 [1]
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Groundwater quality, age, and susceptibility and vulnerability to nitrate contamination with linkages to land use and groundwater flow, Upper Black Squirrel Creek Basin, Colorado, 2013 [研究报告]
10.3133/sir20165020U.S. Geological Survey. 2016-01-01
Wellman, Tristan P.;  Rupert, Michael G. mgrupert@usgs.gov
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