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National Agricultural Library (U.S.)
8
United States. National Highway Traffic Safety Administration
8
United States. Environmental Protection Agency
7
United States. Federal Aviation Administration
7
Temple University. School of Law
6
Hindle, Brooke
5
Library of Congress. Congressional Research Service
5
National Institute of Standards and Technology (U.S.)
5
United States. National Technical Information Service
5
Ellsworth, Lucius F.
4
Grimm, Ann C.
4
Kraeuter, David W.
4
Surrency, Erwin C.
4
United States. Department of Energy
4
United States. Environmental Protection Agency. Office of Emergency and Remedial Response
4
United States. Environmental Protection Agency. Office of Research and Development
4
United States. Environmental Protection Agency. Office of Solid Waste and Emergency Response
4
University of Illinois (Urbana-Champaign campus). College of Engineering
4
Center for Environmental Research Information (U.S.)
3
Coastal Engineering Research Center (U.S.)
3
Davis, Marjorie V. (Marjorie Veith), 1910-
3
Huber, Kristina R.
3
Industrial Environmental Research Laboratory (Cincinnati, Ohio)
3
Institute of Early American History and Culture (Williamsburg, Va.)
3
National Mine Health and Safety Academy
3
National debate topic for high schools, 1985-1986
3
Pittsburgh Antique Radio Society
3
U.S. Nuclear Regulatory Commission. Division of Technical Information and Document Control
3
United States. Bureau of Mines
3
United States. Environmental Protection Agency. Office of Air Quality Planning and Standards
3
United States. Federal Highway Administration
3
United States. Mine Safety and Health Administration
3
United States. Minerals Management Service
3
United States. Minerals Management Service. Atlantic OCS Region
3
United States. Office of Space Science and Applications
3
United States. Superintendent of Documents
3
American National Standards Institute
2
American Public Works Association
2
Beal, Minnie M.
2
Business Roundtable
2
Capan, Donald T.
2
Claiborne, Craig
2
De Leuw, Cather & Company
2
Dissmeyer, George E.
2
Drancsak, Marina
2
Environmental Research Information Center
2
Feather, Timothy D.
2
Fieldner, Arno Carl, 1881-1966
2
Government Institutes
2
Harrington, Keith W.
2
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