Center for Strategic and International Studies (United States)
12
|
Urban Institute (United States)
8
|
Environment for Development Initiative (Sweden)
7
|
Mathematica Policy Research (United States)
5
|
International Institute for Environment and Development (United Kingdom)
3
|
Resources for the Future (United States)
3
|
Center for Education Policy Analysis (United States)
2
|
Brookings Institution (United States)
1
|
Center for American Progress (United States)
1
|
Centre for Economic Policy Research (United Kingdom)
1
|
International Institute for Sustainable Development (Canada)
1
|
National Bureau of Economic Research (United States)
1
|
Overseas Development Institute (United Kingdom)
1
|
Wuppertal Institute for Climate, Environment and Energy (Germany)
1
|