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Institution
Collection
Subject
298
Water quality
104
Groundwater Quality
95
Water Pollution
93
Nutrient pollution of water
86
Pesticides Environmental aspects
73
Groundwater Pollution
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40
Water quality biological assessment
35
Land use Environmental aspects
31
Groundwater
29
Hydrogeology
29
Water quality Measurement
26
Nitrates Environmental aspects
22
Aquifers
22
Suspended sediments
21
Trace elements Environmental aspects
19
Organic water pollutants
19
Water quality management
18
Organic compounds Environmental aspects
17
Organochlorine compounds Environmental aspects
16
River sediments
16
Water-supply
15
Groundwater flow
15
Water Nitrogen content
14
Agricultural chemicals Environmental aspects
14
Contaminated sediments
14
Stream ecology
13
Fish communities
13
Stream measurements
12
High Plains Aquifer
12
Streamflow
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Author
National Water-Quality Assessment Program (U.S.)
494
Geological Survey (U.S.)
261
Geological Survey (U.S.),
12
Spahr, Norman E.
11
Lee, K. E.
10
Andrews, William J., 1962-
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10
Gilliom, Robert J.
9
Lindsey, Bruce D., 1962-
7
Domagalski, Joseph L.
7
Fallon, James D.
7
Kingsbury, James A.
7
McMahon, Peter B.
7
Peterson, David A. 1955-
7
Transport of Anthropogenic and Natural Contaminants (TANC) to Public-Supply Wells (Study)
6
Gellenbeck, D. J.
6
Goldstein, Robert M.
6
Kratzer, Charles R.
6
Mueller, David K.
6
Sprague, Lori A.
5
Baker, Nancy Tucker, 1957-
5
Bexfield, Laura M.,
5
Brown, Larry R.
5
Capel, Paul D.,
5
Deacon, Jeffrey R.
5
Delzer, Gregory C.
5
Embrey, S. S.
5
Giddings, Elise M. P.
5
Goldstein, Robert M.,
5
Hamilton, Pixie A.
5
Kroening, Sharon E.
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Language
Genre
Literary Form
Region
128
United States
53
California
48
Wisconsin
37
Minnesota
26
Mississippi River Watershed
25
Texas
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24
Florida
21
Washington (State)
20
Georgia
18
Connecticut
18
Illinois River Watershed
18
Oregon
17
High Plains Aquifer
17
Utah
16
Colorado
16
North Carolina
16
Ozark Mountains
16
Willamette River Watershed
15
Indiana
15
Michigan
14
Arizona
14
South Carolina
13
Kansas
13
Nevada
12
Colorado River Watershed (Colo.-Mexico)
12
Iowa
12
New York (State)
12
San Joaquin River Watershed
12
Susquehanna River Watershed
12
Virginia
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Call Number
Year of Publication