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Trends in nutrient concentrations, loads, and yields in streams in the Sacramento, San Joaquin, and Santa Ana Basins, California, 1975-2004 [研究报告]
U.S. Geological Survey. 2011-01-01
Kratzer, Charles R.;  Kent, Robert rhkent@usgs.gov;  Seleh, Dina K.;  Knifong, Donna L. dknifong@usgs.gov;  Dileanis, Peter D.;  Orlando, James L.
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