1992
Soil And Water Conservation In Sub-Saharan Africa: Towards Sustainable Production By The Rural Poor: A Report. Amsterdam: International Fund for Agricultural Development (IFAD). http://www.worldcat.org/oclc/30624582.
. 1992. 1989
Forestry And Food Security. Fao Forestry Paper 90. Rome: Food and Agriculture Organization of the United Nations. http://www.worldcat.org/oclc/20998704.
. 1989. Land And Water Strategy: Sustainable Development. A Summary Of Public Input: What You Told Us. [Winnipeg, MB]: Province of Manitoba. http://www.worldcat.org/oclc/29312143.
. 1989. 1987
“Elements Of Success: Sustainable Development In Sub-Saharan Africa”. In World Resources 1987: An Assessment Of The Resource Base That Supports The Global Economy, 221-238. Washington, DC: Basic Books. https://www.wri.org/publication/world-resources-1987.
. 1987. 1985
“The Guesselbodi Experiment: Bushland Management In Niger”. Rural Africana 23-24: 67-77.
. 1985. “Soil And Water Conservation As A Starting Point For Rural Forestry: The Oxfam Project In Ouahigouya, Burkina Faso”. Rural Africana 23-24: 79-85.
. 1985.