Author
Geological Survey (U.S.)
108
Geological Survey (U.S.),
96
United States. Bureau of Mines
19
United States. National Aeronautics and Space Administration
17
SpringerLink (Online Service)
15
SpringerLink (Online service)
14
United States. Environmental Protection Agency
13
United States. Environmental Protection Agency. Office of Water
11
Ford Motor Company. Parts and Service Division. Training and Publications Department
10
Colorado. Department of Public Health and Environment. Water Quality Control Division
8
Colorado. Hazardous Materials and Waste Management Division
8
Gallagher, David, 1906-
8
Yates, Robert G. 1910-
8
Bailey, Edgar H. 1914-1983
7
National Risk Management Research Laboratory (U.S.)
7
Gray, John E., 1956-
6
Ross, Clyde P. 1891-1965
6
Krabbenhoft, David P.
5
National Water-Quality Assessment Program (U.S.)
5
Ross, Clyde P. 1891-1965,
5
Town, Joseph W.
5
United States. Environmental Protection Agency. Office of Air Quality Planning and Standards
5
United States. Environmental Protection Agency. Office of Research and Development
5
United States. Interdepartmental Committee on Scientific and Cultural Cooperation,
5
United States. National Park Service
5
Ackerman, Joshua Timothy,
4
Bailey, Edgar H. 1914-1983,
4
Brigham, Mark E.
4
Brumbaugh, William G.
4
Burgess, Colin, 1947-
4
Dorati, Antal,
4
Eagles-Smith, Collin A.,
4
Erickson, Ralph Leroy, 1923-
4
Indiana. Department of Environmental Management
4
Library of Congress. Congressional Research Service,
4
Machado, Lúcia
4
Manned Spacecraft Center (U.S.)
4
Marsh, Sherman P., 1935-
4
Mexico. Dirección de Minas y Petróleo,
4
Risch, Martin R.
4
ScienceDirect (Online service)
4
Stickney, William A.
4
U.S. Geological Survey Toxic Substances Hydrology Program
4
United States. Bureau of Land Management
4
United States. Bureau of Reclamation
4
United States. Congress. Senate. Committee on Environment and Public Works
4
United States. Congress. Senate. Committee on Environment and Public Works. Subcommittee on Clean Air and Nuclear Safety,
4
United States. Food and Drug Administration
4
Universidad Nacional Autónoma de México. Instituto de Geología,
4
Waters, Aaron C. 1905-1991,
4
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