Author
Geological Survey (U.S.)
3,550
United States Federal Highway Administration
943
United States Bureau of Land Management
853
North Carolina Department of Transportation. Project Development and Environmental Analysis Branch
827
United States Forest Service
710
United States Environmental Protection Agency
700
United States General Accounting Office
516
United States Congress. Senate. Committee on Environment and Public Works
439
United States Department of Energy
403
U.S. Nuclear Regulatory Commission Office of Nuclear Reactor Regulation
400
ebrary, Inc
397
National Water-Quality Assessment Program (U.S.)
373
United States Minerals Management Service. Gulf of Mexico OCS Region
310
United States National Park Service
292
U.S. Fish and Wildlife Service
287
United States Army. Corps of Engineers
284
United States Environmental Protection Agency. Office of Air Quality Planning and Standards
276
Bullfrog Films
264
North Carolina Division of Highways
261
Organisation for Economic Co-operation and Development
255
United States Agency for Toxic Substances and Disease Registry. Division of Toxicology
244
United States Environmental Protection Agency. Office of Research and Development
235
Prevatt, Lubin V
234
Asian Development Bank
222
United Nations Environment Programme
215
Ḳol Yiśraʼel
207
North Carolina Division of Highways. Planning and Environmental Branch
200
National Risk Management Research Laboratory (U.S.)
198
United States Office of Surface Mining Reclamation and Enforcement
196
United States Forest Service. Pacific Northwest Region
184
Films for the Humanities & Sciences (Firm)
181
Industrial Environmental Research Laboratory (Research Triangle Park, N.C.)
178
United States Office of Hydropower Licensing
177
United States Congress. Office of Technology Assessment
173
Canada Environment Canada
172
United States Government Accountability Office
169
ProQuest (Firm)
166
United States Federal Energy Regulatory Commission. Office of Energy Projects
166
United States Bureau of Reclamation
162
Industrial Environmental Research Laboratory (Cincinnati, Ohio)
161
Films Media Group
158
De Gruyter
155
United States Environmental Protection Agency. Office of Water
145
World Bank
138
United States Congress. Senate. Committee on Energy and Natural Resources
137
United States Environmental Protection Agency. Emission Standards and Engineering Division
137
United States Federal Aviation Administration
132
Air and Energy Engineering Research Laboratory
131
United States Minerals Management Service
131
San Francisco (Calif.) Planning Department
129
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