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“The Role Of Agroforestry In The Farming Systems In Rwanda With Special Reference To The Bugesera-Gisaka-Migongo (Bgm) Region”. Agroforestry Systems 4 (4): 271-289. doi:10.1007/BF00048104. http://link.springer.com/article/10.1007/BF00048104.
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“Food, Coffee And Casuarina: An Agroforestry System From The Papua New Guinea Highlands”. Agroforestry Systems 2 (4): 273-279. doi:10.1007/BF00147038. http://link.springer.com/article/10.1007/BF00147038.
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“The Economy Of The Batek Of Malaysia: Annual And Historical Perspectives”. Research In Economic Anthropology 6: 29-52.
. 1984. 1983
“Characterization And Evaluation Of Agroforestry Systems: The Case Of Acosta-Puriscal, Costa Rica”. Agroforestry Systems 1 (2): 101-115. doi:10.1007/BF00596352. https://doi.org/10.1007/BF00596352.
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“Agroforestry In The Amazon Basin: Practice, Theory And Limits Of A Promising Land Use”. In Amazonia: Agriculture And Land Use Research, 339-351. Cali, Colombia: Centro Internacional de Agricultura Tropical. http://www.worldcat.org/oclc/16754729.
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