Author
SpringerLink (Online service)
460
Infobase,
144
SpringerLink (Online Service)
128
Oxford Scholarship Online
117
Films for the Humanities & Sciences (Firm)
105
Infobase
104
ScienceDirect (Online service)
55
United States. Congress. House. Select Committee on Energy Independence and Global Warming
51
Geological Survey (U.S.)
44
Geological Survey (U.S.),
36
Library of Congress. Congressional Research Service,
35
United States. Congress. House. Select Committee on the Climate Crisis,
31
EBSCOhost
24
United States. Congress. Senate. Committee on Foreign Relations
19
Public Broadcasting Service (U.S.)
18
United States. Congress. Senate. Committee on Energy and Natural Resources
18
Zajda, Joseph I.,
17
United States. Congress. Senate. Committee on Environment and Public Works
16
ProQuest (Firm)
14
United States. Congress. House. Committee on Oversight and Government Reform
14
United States. Congress. Senate. Committee on Environment and Public Works,
14
United States. Congressional Budget Office
14
MacNeil/Lehrer Productions
12
United States. Congress. Senate. Committee on Commerce, Science, and Transportation
12
Zajda, Joseph I.
12
BBC (Firm)
11
United States. National Oceanic and Atmospheric Administration
11
Colorado. Office of State Auditor
10
Rai Trade (Firm)
10
United States. Environmental Protection Agency
10
United States. Congress. Senate. Committee on Banking, Housing, and Urban Affairs
9
Ethical Markets Media
8
United States. Congress. House. Committee on Financial Services,
8
United States. National Aeronautics and Space Administration
8
United Nations Environment Programme
7
United States. Congress. House. Committee on Energy and Commerce
7
United States. Congress. House. Committee on Financial Services
7
United States. Congress. House. Committee on Science, Space, and Technology (2011- ),
7
United States. Congress. Senate. Committee on Homeland Security and Governmental Affairs. Permanent Subcommittee on Investigations
7
United States. Environmental Protection Agency,
7
United States. National Oceanic and Atmospheric Administration,
7
4 Learning (Firm)
6
Cable News Network
6
Ebooks Corporation
6
Goddard Space Flight Center
6
Henderson, Hazel, 1933-,
6
Majhanovich, Suzanne,
6
National Geographic Digital Media (Firm)
6
Powersports Millennium International (Firm)
6
Rocky Mountain Research Station (Fort Collins, Colo.)
6
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