Indigenous knowledge Social Psychology and Social Anthropology, (New March 2000) 3 Sustainability 3 Agroforestry 2 Agroforestry and Multipurpose Trees: Community, Farm and Social Forestry 2 Biodiversity 2 Case studies 2 more ... Nature conservation 2 Plant Breeding and Genetics 2 Soil fertility 2 Tropics 2 Agricultural Economics 1 Agricultural ecology 1 Agricultural economics 1 Agriculture 1 Agroforestry systems 1 Biodiversity conservation 1 Biological Resources (General) 1 Biological Resources (Plant) 1 Biotechnology 1 Biotechnology (General), (Revised June 2002) 1 Community Participation and Development, (New March 2000) 1 Community development 1 Conservation 1 Cycling 1 Ecological restoration 1 Economic conditions 1 Ecotourism 1 Ethnoscience 1 Food Economics, (New March 2000) 1 less ...