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User Groups As Producers In Participatory Afforestation Strategies. Cambridge, MA: Harvard Institute for International Development.
. 1989. Conference Paper
“The Role Of Trees In Agroforestry: Some Comments”. In Plant Research And Agroforestry: Proceedings Of A Consultative Meeting Held In Nairobi, 8 To 15 April 1981, 257-270. Nairobi, Kenya: International Council for Research in Agroforestry. http://www.worldcat.org/oclc/11698847.
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