1990
“Refugees And Forestry”. USAID.
. 1990. 1989
“Survey Report For Increasing Food Production And Its Development Plan In Africa: Zimbabwe”. Tokyo: Association for International Cooperation of Agriculture & Forestry, Japan.
. 1989. 1988
“Arid Land Plants For Economic Development And Desertification Control”. Desertification Control Bulletin (17): 18-21. http://www.worldcat.org/oclc/12319640.
. 1988. Glossary Of Selected Terms In Sustainable Agriculture. Gatekeeper Series No. Sa6. London; Washington, DC: International Institute for Environment and Development, Sustainable Agriculture Programme. http://www.worldcat.org/oclc/19531919.
. 1988. 1987
“Managing Natural Resources For Sustainability”. In Sustainability Issues In Agricultural Development: Proceedings Of The Seventh Agriculture Sector Symposium, 167-181. Washington, DC: World Bank. http://www.worldcat.org/oclc/925356016.
. 1987. 1986
“African Traditional Ecological Knowledge: A Preliminary Investigation Of Indigenous Or Traditional Ecological Knowledge And Associated Sustainable Management Practices In Africa And Relevance To Cida's Environmental Policy”. Wakefield, Quebec: Canadian International Development Agency.
. 1986. Women And Community Forestry In Sudan. [Rome]: Food and Agriculture Organization of the United Nations. http://www.worldcat.org/oclc/34367596.
. 1986.