1. Natural Resource Policy Advisor, US Department of Agriculture/US Agency for International Development, 1325 G street NW, Washington, DC 20005, U.S.A.
2. Class of 1946 Visiting Professor of International Environmental Studies, Center for Environmental Studies, Williams College, Kellogg House, P.O. Box 632, Williamstown, MA 01267, U.S.A.
3. Research School of Environmental Studies, Charles Darwin University Australia, and Center for International Forestry Research, Bogor, Indonesia.
4. Regional Coordinator for West Africa, Center for International Forestry Research, 06 BP 9478 Ouagadougou 06, Burkina Faso; US Department of Agriculture/US Agency for International Development, 1325 G street NW, Washington, DC 20005, U.S.A.