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Author: Geological Survey (U.S.),
Institution
Subject
269
Water quality
164
Groundwater Pollution
129
Water Pollution
80
Pesticides Environmental aspects
76
Groundwater Quality
73
Coal mines and mining Environmental aspects
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63
Groundwater
50
Nitrates Environmental aspects
47
Hydrology
42
Hydrogeology
38
Nutrient pollution of water
37
Environmental monitoring
37
Land use Environmental aspects
35
Strip mining Environmental aspects
30
Aquifers
30
Groundwater flow
28
Streamflow
25
Selenium Environmental aspects
22
Irrigation Environmental aspects
22
Metals Environmental aspects
22
Stream measurements
22
Water quality biological assessment
21
Mercury Environmental aspects
21
River sediments
21
Sanitary landfills Environmental aspects
20
Soil pollution
19
Water quality management
17
Agricultural chemicals Environmental aspects
16
Dams Environmental aspects
15
Agricultural pollution
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Author
Geological Survey (U.S.),
80
National Water-Quality Assessment Program (U.S.)
54
United States. Environmental Protection Agency
45
United States. Bureau of Land Management
31
U.S. Fish and Wildlife Service
30
United States. Bureau of Reclamation
more ...
29
United States. National Park Service
27
United States. Department of Energy
15
United States. Army. Corps of Engineers
10
United States. Forest Service
9
New York (State). Department of Environmental Conservation
9
United States. Bureau of Indian Affairs
8
Bartholomay, Roy C.,
8
Washington (State). Department of Ecology
7
Reed, Lloyd A.,
7
United States. Army. Corps of Engineers,
7
United States. Environmental Protection Agency,
6
Braun, Christopher L.,
6
Butler, David L. 1946-
6
California. State Water Resources Control Board
6
Dodge, Kent A.,
6
Florida. Department of Environmental Regulation
6
Kansas. Department of Health and Environment
6
Langland, Michael J.,
6
Minnesota Pollution Control Agency
6
Ohio. Division of Reclamation
6
United States. Agricultural Research Service
6
United States. Naval Facilities Engineering Command. Southern Division
5
Anderson, Chauncey W.,
5
Cannon, M. R.,
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Language
Genre
Literary Form
Region
80
United States
70
Colorado
69
California
51
Washington (State)
48
Florida
44
Pennsylvania
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39
Idaho
34
New York (State)
30
Montana
28
Oregon
26
Nevada
26
Ohio
24
Texas
23
Arizona
23
Kansas
23
New Jersey
23
Wyoming
22
Alaska
21
Minnesota
20
North Carolina
20
Wisconsin
19
Massachusetts
18
Georgia
17
Utah
15
Missouri
15
New Mexico
14
Illinois
14
Kentucky
13
Indiana
13
South Carolina
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Call Number
Year of Publication