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Institution
Collection
Format
Subject
Water quality
269
Water-supply
165
Groundwater
94
Groundwater Quality
89
Water Pollution
60
Stream measurements
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59
Hydrology
56
Hydrogeology
50
Water Composition
48
Nutrient pollution of water
45
Streamflow
39
Groundwater Pollution
37
Aquifers
35
Groundwater flow
24
Pesticides Environmental aspects
24
Water quality management
21
Hydrogeological surveys
21
Runoff
21
Water resources development
18
Coal mines and mining Environmental aspects
18
Suspended sediments
16
Land use Environmental aspects
16
Rivers
16
Water chemistry
16
Water quality biological assessment
15
River sediments
14
Sediment transport
14
Trace elements in water
13
Irrigation Environmental aspects
12
Strip mining Environmental aspects
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Author
1,272
Geological Survey (U.S.)
134
National Water-Quality Assessment Program (U.S.)
36
United States. Environmental Protection Agency
27
United States. Bureau of Reclamation
25
United States. Bureau of Land Management
20
United States. National Park Service
more ...
19
Wells, J. V. B.
17
United States. Army. Corps of Engineers
13
Geological Survey (U.S.). Water Resources Division
12
Love, S. K. 1903-1995
12
Pope, Larry M.
11
Kansas. Department of Health and Environment
11
Missouri. Division of Environmental Quality
11
U.S. Fish and Wildlife Service
11
United States. Bureau of Indian Affairs
11
Washington (State). Department of Ecology
10
Robertson, Dale M.
9
Butler, David L. 1946-
9
Pennsylvania. Department of Environmental Protection
9
Wisconsin. Department of Natural Resources
8
Illinois. Environmental Protection Agency
8
New Jersey. Department of Environmental Protection
8
Paulsen, Carl G.
7
Andrews, William J., 1962-
7
Christensen, Victoria G.
7
Embrey, S. S.
7
Ohio. Division of Reclamation
7
Payne, G. A.
7
Ruhl, J. F.
7
Spahr, Norman E.
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Language
Genre
18
Maps
15
Statistics
8
Periodicals
7
Technical reports
2
Case studies
2
Handbooks and manuals
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1
Abstracts
1
Bathymetric maps
1
Bibliographies
1
Conference papers and proceedings
1
Congresses
1
Databases
1
Gazetteers
1
Geographic information systems
1
Indexes
1
Serial publications
1
Tables (Data)
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Literary Form
Region
279
United States
100
Colorado
64
Texas
60
California
55
Missouri River Watershed
53
Colorado River Watershed (Colo.-Mexico)
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52
Florida
52
Mexico, Gulf of
48
Kansas
44
Minnesota
44
Oregon
44
Washington (State)
44
Wisconsin
42
Mississippi River Watershed
35
Pennsylvania
29
North Carolina
29
Ohio
28
Missouri
27
New York (State)
26
New Jersey
24
Utah
22
Nebraska
22
Wyoming
21
Arizona
21
Massachusetts
20
Illinois
19
Arkansas
19
Oklahoma
18
Virginia
17
Georgia
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Call Number
Year of Publication