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2012 [1]
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Century-scale perspective on water quality in selected river basins of the conterminous United States [研究报告]
U.S. Geological Survey. 2012-01-01
Stets, Edward G.;  Kelly, Valerie J. vjkelly@usgs.gov;  Broussard, Whitney P. III;  Smith, Thor E. tesmith@usgs.gov;  Crawford, Charles G. cgcrawfo@usgs.gov
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