Author/Creator
- United States1,593
- Municipal Environmental Research Laboratory236
- United States. Forest Service230
- Industrial Environmental Research Laboratory (Cincinnati, Ohio)229
- United States. Environmental Protection Agency. Office of Research and Development229
- United States. National Aeronautics and Space Administration189
- United States. Bureau of Land Management180
- Langley Research Center179
- United States International Trade Commission178
- United States. National Aeronautics and Space Administration. Scientific and Technical Information Branch159
- United States. Forest Service. Pacific Northwest Region155
- United States. Federal Highway Administration. Office of Research144
- United States. National Aeronautics and Space Administration. Scientific and Technical Information Office144
- United States. Federal Highway Administration. Office of Development129
- U.S. Fish and Wildlife Service126
- United States. Department of Energy119
- United States. Environmental Protection Agency106
- Robert S. Kerr Environmental Research Laboratory105
- Corvallis Environmental Research Laboratory89
- Lewis Research Center89