Author
SpringerLink (Online service)
1,503
ScienceDirect (Online service)
961
SpringerLink (Online Service)
653
National Renewable Energy Laboratory (U.S.)
502
Geological Survey (U.S.)
441
Infobase,
366
Films for the Humanities & Sciences (Firm)
323
Infobase
322
National Renewable Energy Laboratory (U.S.),
262
United States,
226
Ivanhoe Broadcast News (Firm)
198
Geological Survey (U.S.),
174
EBSCOhost
167
United States. Department of State
163
United States. Department of State,
158
Library of Congress. Congressional Research Service,
135
Educational Resources Information Center (U.S.)
130
Risk Reduction Engineering Laboratory (U.S.)
130
Oxford Scholarship Online
128
National Institute of Standards and Technology (U.S.)
117
United States. Congress. House. Committee on Science, Space, and Technology (2011- ),
96
United States. Congress. House. Committee on Science
92
National Cancer Institute (U.S.)
86
United States. Office of Educational Research and Improvement
84
United States. National Aeronautics and Space Administration
81
National Institute of Education (U.S.)
79
Klein, George, 1925-2016
74
National Institutes of Health (U.S.)
74
United States. Environmental Protection Agency. Office of Research and Development
70
United States. Congress. Senate. Committee on Energy and Natural Resources
69
Colorado. Division of Probation Services
65
United States. Congress. Senate. Committee on Commerce, Science, and Transportation,
64
United States. Congress. Senate. Committee on Commerce, Science, and Transportation
62
National Science Foundation (U.S.)
61
BBC Worldwide Ltd
58
National Institute of Justice (U.S.)
55
University of Colorado Boulder. Natural Hazards Research and Applications Information Center
52
Looby, Gwen P.
50
National Institute on Drug Abuse
50
United States. Bureau of Mines
50
University of Akron
50
United States. Congress. House. Committee on Science, Space, and Technology
48
United States. Department of Energy
48
United States. Agricultural Research Service
47
United States. Congress. Office of Technology Assessment
47
United States. Congress. Senate. Committee on Appropriations. Subcommittee on Departments of Labor, Health and Human Services, Education, and Related Agencies
47
Vande Woude, George F.
45
United States. Agency for Healthcare Research and Quality
39
Maramorosch, Karl
38
U.S. Army Research Laboratory
38
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