Author
Geological Survey (U.S.)
9,275 results
ProQuest (Firm)
3,948 results
United States. Bureau of Mines
1,166 results
United States. Forest Service
1,105 results
Texas Agricultural Experiment Station
792 results
United States. Department of the Army
707 results
United States. National Aeronautics and Space Administration
599 results
United States. Department of Energy
594 results
United States. Soil Conservation Service
594 results
United States. National Bureau of Standards
425 results
United States. Congress. Office of Technology Assessment
363 results
United States. Federal Highway Administration
348 results
Northeastern Forest Experiment Station (Radnor, Pa.)
339 results
Library of Congress. Congressional Research Service
333 results
Rocky Mountain Forest and Range Experiment Station (Fort Collins, Colo.)
328 results
Intermountain Forest and Range Experiment Station (Ogden, Utah)
326 results
United States. Bureau of Plant Industry
315 results
North Central Forest Experiment Station (Saint Paul, Minn.)
302 results
Texas. State Department of Highways and Public Transportation
302 results
United States. Department of Agriculture. Economic Research Service
299 results
Pacific Northwest Forest and Range Experiment Station (Portland, Or.)
298 results
Smithsonian Institution
295 results
Langley Research Center
292 results
United States. Bureau of Land Management
291 results
United States. Army. Corps of Engineers
283 results
United States. National Aeronautics and Space Administration. Scientific and Technical Information Branch
279 results
U.S. Fish and Wildlife Service
266 results
National Library of Medicine (U.S.)
259 results
United States. Environmental Protection Agency. Office of Research and Development
242 results
United States. Department of the Interior
240 results
Forest Products Laboratory (U.S.)
234 results
United States. Agricultural Research Service
209 results
Kentucky Geological Survey
203 results
Lewis Research Center
202 results
Environmental Research Laboratories (U.S.)
199 results
Coastal Engineering Research Center (U.S.)
198 results
Pacific Southwest Forest and Range Experiment Station (Berkeley, Calif.)
196 results
Cold Regions Research and Engineering Laboratory (U.S.)
193 results
Southeastern Forest Experiment Station (Asheville, N.C.)
193 results
United States. National Park Service
188 results
Library of Congress
182 results
Southern Forest Experiment Station (New Orleans, La.)
176 results
United States. Office of Education
176 results
Texas Transportation Institute
174 results
United States. National Highway Traffic Safety Administration
169 results
United States. Environmental Protection Agency
168 results
National Cancer Institute (U.S.). Division of Cancer Cause and Prevention
164 results
Construction Engineering Research Laboratory (U.S. : 1969-1992)
161 results
Municipal Environmental Research Laboratory
160 results
Smithsonian Institution. Press
159 results
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