1. Forestry Division Food and Agricultural Organization of the United Nations, Viale delle Terme di Caracalla Rome 00153 Italy
2. Food, Trees and Agriculture Research Program Center for International Forestry Research, P.O. Box 0113 BOCBD Bogor 16000 Indonesia
3. World Resources Institute, 10 G Street, NE Suite 800 Washington DC 20002 U.S.A.
4. School of Environmental Studies University of Victoria, David Turpin Building, B243 Victoria BC Canada