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Institution
Collection
Format
Subject
29
Water quality
6
Pesticides Environmental aspects
4
Organic water pollutants
4
Willamette River Watershed (Or.)
3
Water Dissolved oxygen
3
Willamette River (Or.)
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2
Eutrophication
2
Freshwater algae
2
Groundwater Quality
2
Stream self-purification Mathematical models
2
Water Dissolved oxygen Mathematical models
2
Water Sampling
2
Water quality Mathematical models
1
Groundwater
1
Groundwater Pollution
1
Hydrogen-ion concentration Measurement
1
Hydrogeology
1
Nutrient pollution of water
1
River sediments
1
Rivers
1
Sediments (Geology)
1
Sediments (Geology) Composition
1
Stream measurements
1
Streamflow velocity
1
Trace elements Analysis
1
Trace elements in water
1
Water Dissolved oxygen Measurement
1
Water Nitrogen content
1
Water quality Measurement
1
Water quality management
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Author
16
Geological Survey (U.S.),
9
National Water-Quality Assessment Program (U.S.)
8
Geological Survey (U.S.)
8
Oregon. Department of Environmental Quality
7
Rickert, David A., 1940-
5
Hines, Walter G.,
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4
McKenzie, Stuart W.,
4
Oregon. Willamette River Technical Advisory Steering Committee
3
Anderson, Chauncey W.
3
Anderson, Chauncey W.,
3
Hines, Walter G.
2
Bonn, Bernadine
2
McKenzie, Stuart W.
2
Rinella, Frank A.
2
Rinella, Frank A.,
2
Rounds, Stewart,
2
Wentz, Dennis A.,
1
Bonn, Bernadine,
1
Caldwell, James M.
1
Doyle, Micelis C., 1966-
1
Dunnette, David A., 1939-
1
Fuhrer, Gregory J.,
1
Hinkle, Stephen R.
1
Janet, Mary L.
1
Janet, Mary L.,
1
Laenen, Antonius
1
Lee, Karl K.,
1
Mangano, Joseph F.,
1
Morace, Jennifer L.
1
Morace, Jennifer L.,
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