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. 1990. “Towards A Sustainable Development Strategy For The Sierra De Los Tuxtlas, Mexico”. Xalapa, Veracruz, Mexico: Centro de estudios Agrarios and Department of Sociology and Anthropology, Carleton University.
. 1990. “Traditional Agriculture And Plant Pathology (Tapp) Database [Ascii Format For The Macintosh]”. Ithaca, NY: Cornell University Department of Plant Pathology.
. 1990. “Traditional Crop Sparks New Interest As A Multipurpose Tree”. Agroforestry Today (Kenya) 2 (2): 4-7.
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“The Tragedy Of The Commons: Twenty-Two Years Later”. Human Ecology 18 (1): 1-19. doi:10.1007/BF00889070. http://dx.doi.org/10.1007/BF00889070.
. 1990. “Tree Crop Based Agroforestry In Nigeria: A Checklist Of Crops Intercropped With Cocoa”. Agroforestry Systems 11 (3): 227-241. doi:10.1007/BF00045901. https://doi.org/10.1007/BF00045901.
. 1990. The Tropical Forestry Action Plan: What Progress?. Penang, Malaysia: World Rainforest Movement and the Ecologist. http://www.worldcat.org/oclc/23738011.
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Taking Care Of Sibö's Gifts: An Environmental Treatise From Costa Rica's Kéköldi Indigenous Reserve. San José, Costa Rica: Asociación de Desarrollo Integral de la Reserva Indígena Cocles/KéköLdi. http://www.worldcat.org/oclc/24535846.
. 1991. “Traditional Agroforestry Practices In Zimbabwe”. Agroforestry Systems 14 (2): 99-111. doi:10.1007/BF00045726. http://link.springer.com/article/10.1007/BF00045726.
. 1991. “Traditional Tree Crop Based Agroforestry In Coffee Producing Areas Of Harerge, Eastern Ethiopia”. Agroforestry Systems 16 (3): 257-267. doi:10.1007/BF00119322. https://doi.org/10.1007/BF00119322.
. 1991. Tree And Land Tenure In The Eastern Nepal Terai: A Case Study By Rapid Appraisal. Pokhara, Nepal [Kathmandu, Nepal]: IOF (Institute of Forestry)/ YALE/IRG/USAID Institute of Forestry Project and FAO/SIDA Forests, Trees and People Programme. http://www.worldcat.org/oclc/28676224.
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“The T'olche', A Maya System Of Communally Managed Forest Belts: The Causes And Consequences Of Its Disappearance”. Agroforestry Systems 18 (2): 149-177. doi:10.1007/BF00115409. https://doi.org/10.1007/BF00115409.
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“Traditional Environmental Knowledge: A Resource To Manage And Share”. Development (Journal Of Sid [Society For International Development]) (4): 24-30.
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“Traditional Ecological Knowledge, Biodiversity, Resilience And Sustainability”. Beijer Discussion Paper Series No. 31. Stockholm, Sweden: Beijer International Institute of Ecological Economics.
. 1993. “Traditional Ecological Knowledge In Perspective”. In Traditional Ecological Knowledge: Concepts And Cases, 1-10. International Program on Traditional Ecological Knowledge/IDRC: Winnepeg, Manitoba, Canada. https://library.umac.mo/ebooks/b10756577a.pdf.
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