|
National Bureau of Economic Research (United States)
81
|
Brookings Institution (United States)
13
|
Center for International Forestry Research (Indonesia)
10
|
|
Center for Education Policy Analysis (United States)
8
|
RAND Corporation (United States)
7
|
International Institute for Applied Systems Analysis (Austria)
6
|
|
Urban Institute (United States)
6
|
Centro Euro-Mediterraneo sui Cambiamenti Climatici (Italy)
3
|
Resources for the Future (United States)
2
|
|
World Resources Institute (United States)
2
|
American Enterprise Institute (United States)
1
|
Center for Education Policy Research (United States)
1
|
|
Centre for Economic Policy Research (United Kingdom)
1
|
International Institute for Sustainable Development (Canada)
1
|
Mathematica Policy Research (United States)
1
|
|
Overseas Development Institute (United Kingdom)
1
|
Potsdam Institute for Climate Impact Research (Germany)
1
|
