Author
United States. Internal Revenue Service
619
United States. National Highway Traffic Safety Administration
340
Geological Survey (U.S.)
296
United States. Bureau of Mines
132
United States. Federal Highway Administration
131
United States. Federal Aviation Administration
92
U.S. Customs Service
86
United States. Department of Transportation
57
United States. Department of the Treasury. Office of Inspector General,
56
United States. Federal Highway Administration,
50
National Institute of Standards and Technology (U.S.)
49
United States. Congress. Office of Technology Assessment
48
United States. Environmental Protection Agency
48
United States. Internal Revenue Service,
46
United States. Department of the Treasury
44
Market Segment Specialization Program (U.S.)
42
United States. Bureau of Transportation Statistics,
42
United States. Bureau of Alcohol, Tobacco, and Firearms
39
United States. Environmental Protection Agency. Office of Solid Waste and Emergency Response
37
United States. National Aeronautics and Space Administration
37
EBSCOhost
35
ScienceDirect (Online service)
35
United States. Bureau of Transportation Statistics
34
United States. National Highway Traffic Safety Administration,
32
United States. Department of the Treasury,
29
United States. Office of the Special Inspector General for the Troubled Asset Relief Program,
29
Risk Reduction Engineering Laboratory (U.S.)
28
U.S. Atomic Energy Commission. Division of Raw Materials
28
SpringerLink (Online Service)
27
SpringerLink (Online service)
27
United States. Federal Motor Carrier Safety Administration
27
United States. Coast Guard
26
United States. Department of Energy
26
United States. Federal Aviation Administration,
26
United States. Environmental Protection Agency. Office of Research and Development
25
United States. Federal Railroad Administration. Office of Research, Development and Technology,
24
United States. Office of the Inspector General for Tax Administration,
21
United States. Department of Transportation. Research and Innovative Technology Administration
20
United States. Environmental Protection Agency. Office of Water
20
Wells, J. V. B.
20
National Center for Statistics and Analysis (U.S.)
19
United States. National Aeronautics and Space Administration. History Office
18
United States. Bureau of Reclamation
17
United States. Department of Transportation,
17
United States. Federal Highway Administration. Office of Motor Carrier Research and Standards
16
John A. Volpe National Transportation Systems Center (U.S.)
15
United States. Department of Energy. Office of Civilian Radioactive Waste Management
15
United States. Federal Railroad Administration
15
United States. Department of the Interior
14
Financial Crimes Enforcement Network (U.S.)
13
more ...