|
Overseas Development Institute (United Kingdom)
67
|
Centre for Economic Policy Research (United Kingdom)
23
|
Mathematica Policy Research (United States)
7
|
|
RAND Corporation (United States)
7
|
National Bureau of Economic Research (United States)
3
|
Brookings Institution (United States)
2
|
|
Center for Strategic and International Studies (United States)
2
|
International Institute for Environment and Development (United Kingdom)
2
|
International Institute for Sustainable Development (Canada)
2
|
|
Science Policy Research Unit (United Kingdom)
2
|
American Enterprise Institute (United States)
1
|
Energy Policy Research Group (United Kingdom)
1
|
