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Trends in major-ion constituents and properties for selected sampling sites in the Tongue and Powder River watersheds, Montana and Wyoming, based on data collected during water years 1980-2010 [研究报告]
10.3133/sir20135179U.S. Geological Survey. 2014-01-01
Sando, Steven K. sksando@usgs.gov;  Vecchia, Aldo V.;  Barnhart, Elliott P. epbarnhart@usgs.gov;  Sando, Thomas R. tsando@usgs.gov;  Clark, Melanie L. mlclark@usgs.gov;  Lorenz, David L. lorenz@usgs.gov
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