|
American Enterprise Institute (United States)
37513
|
National Bureau of Economic Research (United States)
30845
|
Centre for Economic Policy Research (United Kingdom)
27403
|
|
Brookings Institution (United States)
23673
|
International Institute for Applied Systems Analysis (Austria)
14944
|
Center for Strategic and International Studies (United States)
10078
|
|
Competitive Enterprise Institute (United States)
8162
|
Urban Institute (United States)
7745
|
International Institute for Environment and Development (United Kingdom)
7029
|
|
Konrad Adenauer Foundation (Germany)
6851
|
Carnegie Endowment for International Peace (United States)
6826
|
German Development Institute (Germany)
6757
|
|
Center for International Forestry Research (Indonesia)
6576
|
United Nations Environment Programme (Kenya)
6490
|
Overseas Development Institute (United Kingdom)
6361
|
|
RAND Corporation (United States)
6104
|
Institute for Global Environmental Strategies (Japan)
5801
|
Mathematica Policy Research (United States)
5645
|
|
Center for American Progress (United States)
5620
|
Wuppertal Institute for Climate, Environment and Energy (Germany)
5351
|
