Author
United States Environmental Protection Agency
1,545
United States Office of Saline Water
1,104
Geological Survey (U.S.)
1,030
United States Environmental Protection Agency. Office of Research and Development
931
United States General Accounting Office
931
ebrary, Inc
753
United States Environmental Protection Agency. Office of Research and Monitoring
645
Organisation for Economic Co-operation and Development
404
SpringerLink (Online service)
402
United States Environmental Protection Agency. Office of Air Quality Planning and Standards
378
Municipal Environmental Research Laboratory
364
ProQuest (Firm)
349
American Water Works Association
334
United Nations Environment Programme
329
United States Environmental Protection Agency. Water Quality Office
309
United States Federal Water Pollution Control Administration
295
United States Environmental Protection Agency. Office of Solid Waste and Emergency Response
276
OECD Nuclear Energy Agency
265
Industrial Environmental Research Laboratory (Cincinnati, Ohio)
238
United States Department of Energy
223
United States National Air Pollution Control Administration
201
United States Environmental Protection Agency. Office of Water Regulations and Standards. Criteria & Standards Division
192
World Health Organization
189
United States Public Health Service
184
United States Federal Water Quality Administration
183
Industrial Environmental Research Laboratory (Research Triangle Park, N.C.)
182
International Atomic Energy Agency
171
National Environmental Research Center (Corvallis, Or.)
159
United States Environmental Protection Agency. Office of Water
159
American Society of Civil Engineers
155
National Environmental Research Center (Cincinnati, Ohio)
144
Canada Environment Canada
141
Robert S. Kerr Environmental Research Laboratory
141
Commission of the European Communities
138
United States Bureau of Land Management
137
American Chemical Society Meeting
122
United Nations Economic Commission for Europe
120
United States Congress. Office of Technology Assessment
118
International Water Association
117
ScienceDirect (Online service)
114
American Chemical Society Division of Environmental Chemistry
109
European Environment Agency
108
Risk Reduction Engineering Laboratory (U.S.)
107
Council on Environmental Quality (U.S.)
104
Royal Society of Chemistry (Great Britain)
104
AWWA Research Foundation
102
United States Division of Water Supply and Pollution Control
102
Center for Environmental Research Information (U.S.)
101
International Joint Commission
101
Harrison, Roy M., 1948-
100
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