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Institution
Collection
Format
Subject
Water quality
270
Groundwater
165
Water Pollution
140
Groundwater Quality
119
Hydrogeology
114
Aquifers
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108
Water-supply
102
Hydrology
97
Stream measurements
94
Streamflow
72
Groundwater Pollution
71
Nutrient pollution of water
56
Groundwater flow
53
Suspended sediments
52
River sediments
37
Water quality management
35
Runoff
33
Water quality biological assessment
29
Water resources development
28
Lakes
28
Water levels
26
Pesticides Environmental aspects
26
Water chemistry
25
Coal mines and mining Environmental aspects
22
Environmental monitoring
21
Rivers
21
Sediment transport
21
Urban runoff
20
Land use Environmental aspects
20
Water table
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Author
1,394
Geological Survey (U.S.),
457
Geological Survey (U.S.)
169
National Water-Quality Assessment Program (U.S.)
60
United States. Environmental Protection Agency
50
United States. Bureau of Reclamation
47
United States. National Park Service
more ...
35
United States. Bureau of Land Management
30
California. State Water Resources Control Board
28
United States. Environmental Protection Agency. Office of Water
26
United States. Army. Corps of Engineers
25
New York (State). Department of Environmental Conservation
22
U.S. Fish and Wildlife Service
21
United States. Bureau of Indian Affairs
19
United States. Environmental Protection Agency,
17
Belitz, Kenneth
17
Ground Water Ambient Monitoring and Assessment Program (Calif.)
15
United States. Department of Energy
12
Louisiana. Department of Transportation and Development
12
New Jersey. Department of Environmental Protection
12
Southwest Florida Water Management District (Fla.)
11
National Water-Quality Assessment Program (U.S.),
10
Belitz, Kenneth,
10
Washington (State). Department of Ecology
9
Missouri. Division of Environmental Quality
9
Pennsylvania. Department of Environmental Protection
9
Speiran, Gary K.,
9
Wichita (Kan.)
9
Wisconsin. Department of Natural Resources
8
Andrews, William J., 1962-
8
Brabets, Timothy P.,
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Language
Genre
31
Maps
27
Periodicals
24
Statistics
13
Technical reports
9
Databases
6
Annual reports
more ...
5
Handbooks and manuals
3
Bibliographies
3
Conference papers and proceedings
3
Electronic government information
2
Bathymetric maps
2
Case studies
2
Dictionaries
2
Legislative hearings
1
Academic theses
1
Electronic journals
1
Examinations
1
Gazetteers
1
Legislative materials
1
Remote-sensing maps
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Literary Form
Region
134
United States
119
California
109
Florida
98
Colorado
71
New York (State)
65
Wisconsin
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63
Texas
58
Kansas
57
Minnesota
55
Oregon
42
New Jersey
42
Pennsylvania
41
Washington (State)
39
Ohio
38
Idaho
38
Louisiana
37
North Carolina
34
Arizona
33
Missouri
30
Wyoming
29
Georgia
28
Arkansas
27
Alaska
27
Indiana
27
Montana
26
New Mexico
26
Virginia
25
Illinois
25
Massachusetts
25
Michigan
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Call Number
Year of Publication