|
Environment for Development Initiative (Sweden)
35
|
Resources for the Future (United States)
9
|
International Institute for Environment and Development (United Kingdom)
3
|
|
National Bureau of Economic Research (United States)
3
|
Brookings Institution (United States)
2
|
Center for Development Research (Germany)
2
|
|
Centre for Economic Policy Research (United Kingdom)
2
|
International Institute for Sustainable Development (Canada)
2
|
Overseas Development Institute (United Kingdom)
2
|
|
Institute of Water Policy (Singapore)
1
|
