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Fisher, R. J. 1990. Institutional Incompatibility In Community Forestry: The Case Of Nepal. In Community Organizations And Government Bureaucracies In Social Forestry, 11-25. Honolulu, Hawaii: Environment and Policy Institute, East-West Center.
MacDicken, Kenneth G., and Napoleon T. Vergara. 1990. Introduction To Agroforestry. In Agroforestry: Classification And Management, 1-30. New York: Wiley.
Poffenberger, Mark, ed.. 1990. Keepers Of The Forest: Land Management Alternatives In Southeast Asia. Kumarian Press Library Of Management For Development. Manilia, Philipinnes; West Hartford, CT: Ateneo De Manila University Press; Kumarian Press.
Clay, Daniel C., and Laurence A. Lewis. 1990. Land Use, Soil Loss, And Sustainable Agriculture In Rwanda. Human Ecology 18 (2): 147-161. doi:10.1007/BF00889179.
Abelson, Philip H. 1990. Medicine From Plants. Science 247 (4942): 513. doi:10.1126/science.2300807.
Chambers, Robert. 1990. Microenvironments Unobserved. In Proceedings Of The International Symposium On Natural Resources Management For A Sustainable Agriculture, February 6-10, 1990, 179-205. New Delhi: Indian Society of Agronomy.
International Association for the Study of Common Property. 1990. Program Of Events. In International Association For The Study Of Common Property: "Designing Sustainability On The Commons," 27-30 September 1990, Held At Duke University, Durham, North Carolina. Durham, NC: Duke University.
Cashman, Kristin. 1990. Promoting The Fertilizer Bush In Agroforestry On-Farm Research: A Participatory Approach. In Paper Presented At American Society Of Agronomy Conference, October 21-26, 1990, San Antonio, Texas. San Antonio, TX.
de Treville, Diana. 1990. Research-Client Linkages: The Role Of Ngos In Agroforestry/Natural Resource Management Technology & Transfer. Little Rock, AR: Winrock International Institute for Agricultural Development.
Potter, C. S., and R. E. Meyer. 1990. The Role Of Soil Biodiversity In Sustainable Dryland Farming Systems. In Dryland Agriculture: Strategies For Sustainability, 241-251. New York: Springer. doi:
Gallueel, Vincent F. 1990. Sustainable Yield In Coastal Zone And Aquatic Ecosystems. In Prepared For The National Research Council Panel On Collaborative Research Support For Aid's Sustainable Yield And Natural Resource Management (Sanrem) Project, November 1990.