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“Iterative Increase Of Economic Tree Species In Managed Swidden-Fallows Of The Amazon”. Agroforestry Systems 11 (2): 175-197. doi:10.1007/BF00838727. https://doi.org/10.1007/BF00838727.
. 1990. “Proposal For Research Funding: Formal Representation And Use Of Indigenous Knowledge Of Agroforestry”. University of Wales; University of Edinburgh.
. 1990. “The Types Of Utilization”. In Tropical Forest Ecosystems: A State-Of-Knowledge Report Prepared By Unesco/Unep/Fao, 453-487. Paris: UNESCO. http://www.worldcat.org/oclc/4745455.
. 1978. “Indigenous Practices Of Aquatic Resource Management In The Dry Zone Of Sri Lanka”. In Human Evolution In Its Ecological Context: Proceedings Of The Pithecanthropus Centennial 1893-1993 Congress, Under The Auspices Of The Royal Netherlands Academy Of Arts And Sciences. Leiden, The Netherlands: Pithecanthropus Centennial Foundation, Leiden University. http://www.worldcat.org/oclc/36381768.
. 1993. “Soil Fertility Management Of Paddy Fields By Traditional Farmers In The Dry Zone Of Sri Lanka”. Journal Of Sustainable Agriculture 1 (3): 95-106. doi:10.1300/J064v01n03_08. http://www.tandfonline.com/doi/abs/10.1300/J064v01n03_08.
. 1991. “Agriculture In The Humid Tropics”. In Ecological Aspects Of Development In The Humid Tropics, 93-156. Washington, DC: National Academy Press. https://doi.org/10.17226/19533.
. 1982. “Ecological And Management Considerations For Forest Lands”. In Ecological Aspects Of Development In The Humid Tropics, 93-156. Washington, DC: National Academy Press. https://doi.org/10.17226/19533.
. 1982.