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Institution
Collection
Subject
Water quality management
160
Groundwater Quality
98
Water quality
90
Water Pollution
88
Drinking water
84
Water-supply
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61
Groundwater
43
Water quality Measurement
42
Watershed management
37
Water resources development
31
Water Pollution Law and legislation
28
Groundwater Pollution
24
Nutrient pollution of water
23
Water Purification
22
Water-supply Management
17
Environmental monitoring
16
Hydrology
15
Water conservation
15
Water quality biological assessment
14
Aquifers
14
Drinking water Purification
14
Water quality Standards
14
Water quality monitoring stations
13
Nonpoint source pollution
13
Pesticides Environmental aspects
13
Sewage Purification
13
Water Analysis
13
Water Pollution Total maximum daily load
12
Drinking water Contamination
12
Rules and practice
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Author
243
Geological Survey (U.S.)
157
Geological Survey (U.S.),
109
United States. Environmental Protection Agency. Office of Water
96
Colorado. Department of Public Health and Environment. Water Quality Control Division
65
Source Water Assessment and Protection Program (Colo.)
46
SpringerLink (Online service)
more ...
38
United States. Environmental Protection Agency
24
ScienceDirect (Online service)
21
California. State Water Resources Control Board
21
United States. Congress. House. Committee on Transportation and Infrastructure. Subcommittee on Water Resources and Environment
19
National Water-Quality Assessment Program (U.S.)
18
Belitz, Kenneth
18
Colorado. Department of Agriculture
17
Colorado Water Resources Research Institute
16
United States. Congress. Senate. Committee on Environment and Public Works
16
Waskom, R. M.
15
Colorado State University. Cooperative Extension Service
14
U.S. Fish and Wildlife Service
13
California. State Water Resources Control Board,
13
United States. Bureau of Reclamation
12
Fram, Miranda S.
12
Ground Water Ambient Monitoring and Assessment Program (Calif.)
12
United States. Environmental Protection Agency. Office of Research and Development
11
United States. Environmental Protection Agency,
10
Belitz, Kenneth,
10
United States. Congress. House. Committee on Transportation and Infrastructure
8
Agricultural Chemicals and Groundwater Protection (Program)
8
Bauder, Troy Allen
8
Colorado. Agricultural Chemicals and Groundwater Protection Advisory Committee
8
National Risk Management Research Laboratory (U.S.)
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Language
Genre
52
Handbooks and manuals
38
Conference papers and proceedings
28
Legislative hearings
14
Technical reports
12
Case studies
8
Congresses
more ...
5
Electronic government information
4
Databases
3
Directories
2
Legislative materials
2
Statistics
2
Treaties
1
Abstracts
1
Academic theses
1
Autobiographies
1
Bibliographies
1
Biographies
1
Electronic books
1
Environmental impact statements
1
Reference works
1
Reviews
1
Serial publications
1
Trivia and miscellanea
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Literary Form
Region
335
United States
170
Colorado
59
California
38
Florida
29
Great Lakes (North America)
19
West (U.S.)
more ...
16
Chesapeake Bay Watershed
16
Kansas
15
Arizona
15
Colorado River Watershed (Colo.-Mexico)
15
Ohio
14
Massachusetts
13
Oregon
11
Chesapeake Bay (Md. and Va.)
11
Hawaii
11
Idaho
11
Montana
10
Colorado River (Colo.-Mexico)
10
New York (State)
9
Minnesota
8
New Jersey
8
North Carolina
8
Texas
8
Washington (D.C.)
8
Wisconsin
7
Iowa
7
Kentucky
7
Louisiana
7
Mexican-American Border Region
7
Pennsylvania
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Call Number
Year of Publication