 | | Reefs at Risk - A Map-Based Indicator of Threats to the World's Coral Reefs (WRI, 1998, 56 pages) |
 | | Reforestation in the Pacific Islands (Peace Corps, 1990) |
 | | Regions at Risk: Comparisons of Threatened Environments (UNU, 1995, 588 pages) |
 | | Rehabilitation of Degraded Forests in Asia (World Bank, 1995) |
 | | Renewable Energy Technologies (World Bank, 1994) |
 | | Research and Training for Management of Arid Lands with Special Reference to Anglophone Africa and the University of Khartoum (UNU, 1980, 48 pages) |
 | | Reversing the Spiral - The Population, Agriculture, and Environment Nexus in Sub-Saharan Africa (World Bank, 1994) |
 | | Rural Development in White Nile Province, Sudan (UNU, 1986, 139 pages) |
 | | Rural Energy and Development (World Bank, 1996) |
 | | Rural Energy Survey and Profiles: Senegal - A Training Manual (Peace Corps, 1984) |
 | | Rural Women and the Environment: Shared Concerns? (IRMA, 1994) |
 | | Saline Agriculture: Salt-Tolerant Plants for Developing Countries (BOSTID, 1990) |
 | | Saving the Seed - Genetic Diversity and European Agriculture (GRAIN, 1992) |
 | | Shifting Cultivation in Northern Thailand (UNU, 1980, 44 pages) |
 | | Simple Methods for the Treatment of Drinking Water (GTZ, 1985) |
 | | Social and Environmental Aspects of Desertification (UNU, 1980, 38 pages) |
 | | Social, Economic, and Institutional Aspects of Agro-Forestry (UNU, 1984, 95 pages) |
 | | Soft Energy Worldwide - 1992 1993 (INFORSE, 1993) |
 | | Soil and Water Conservation (SWC) Technologies and Agroforestry Systems (International Institute for Rural Reconstruction (IIRR), 1992) |
 | | Soil Conservation Techniques for Hillside Farms (Peace Corps, 1986) |
 | | Solar and Energy Conserving Food Technologies: A Training Manual (Peace Corps, 1984) |
 | | Solar Cookers in the Third World (GTZ, 1990) |
 | | Solar Drying in Morocco (GTZ) |
 | | Solar Energy. Lessons from the Pacific Island Experience (World Bank, 1994) |
 | | Solar Home Systems: Product Information Sheet (GTZ, 1990) |
 | | Solar Water Heaters in Nepal (SKAT, 1990) |
 | | Somalia Democratic Republic - National Tsetse and Trypanosomiasis Control - Project: Land Use Survey - Economic and Social Benefits of Tsetse Eradication in the Shabeelle Valley (LRDC/NRI, 1986, 64 pages) |
 | | Sourcebook of Alternative Technologies for Freshwater Augmentation in Africa (UNEP/IETC, 1998, 182 pages) |
 | | Sourcebook of Alternative Technologies for Freshwater Augmentation in East and Central Europe (UNEP/IETC, 1998, 131 pages) |
 | | Sourcebook of Alternative Technologies for Freshwater Augmentation in Latin America and the Caribbean (UNEP/OAS, 1997, 279 pages) |
 | | Sourcebook of Alternative Technologies for Freshwater Augmentation in Small Island Developing States (UNEP/IETC, 1998, 230 pages) |
 | | Sourcebook of Alternative Technologies for Freshwater Augmentation in some Asian Countries (UNEP/IETC, 1998, 192 pages) |
 | | South-East Asia's Environmental Future: The Search for Sustainability (UNU, 1993, 422 pages) |
 | | Sowing Forests from the Air (BOSTID, 1981) |
 | | Spatial Analysis for Regional Development (UNU, 1980, 44 pages) |
 | | Steering Business Toward Sustainability (UNU, 1995, 191 pages) |
 | | Strategies for Improved Management of Latin American Drylands (UNU, 1980, 28 pages) |
 | | Studying Water Pollution through Fish Assessment (Indian Institute of Sciences) |
 | | Study on Integrated Pest Management for Libraries and Archives (UNESCO, 1988) |
 | | Surface Water Drainage for Low-Income Communities (WHO, 1991) |
 | | Surface Water Treatment by Roughing Filters - A Design, Construction and Operation Manual (SKAT, 1996) |
 | | Sustainable Agriculture and the Environment in the Humid Tropics (BOSTID, 1993) |
 | | Sustainable Energy Handbook for NGOs and Local Groups (INFORSE, 1993) |
 | | Sustainable Management of Soil Resources in the Humid Tropics (UNU, 1995, 146 pages) |
 | | Sustainable & Soft Energy News Europe - OVE (INFORSE, 1997) |
 | | Sustainable Tourism and Poverty Elimination (UNED-UK, 1999, 18 pages) |
 | | Sustaining the Future: Economic, Social, and Environmental Change in Sub-Saharan Africa (UNU, 1996, 365 pages) |
 | | Synopsis on Integrated Pest Management in Developing Countries (NRI, 1992) |
 | | Taking a Byte Out of Carbon - Electronics Innovation for Climate Protection (WRI, 1998, 56 pages) |
 | | Teaching Conservation in Developing Nations (Peace Corps, 1977) |
 | | Towards Sustainable Water Resources Management - A Strategic Approach (European Commission, 1998, 351 pages) |
 | | Toward Sustainable Management of Natural Resources: Effectiveness of the Range Management Area Program in Lesotho (ADF, 1996, 33 pages) |
 | | Toward Sustainable Management of Water Resources (World Bank, 1995) |
 | | Toxics and Health: - The Potential Long-Term Effects of Industrial Activity (WRI, 1994, 68 pages) |
 | | A Training Manual in Conducting a Workshop in the Design, Construction, Operation, Maintenance and Repair of Hydrams (Peace Corps, 1984) |
 | | Transforming Natural Resources for Human Development : A Resource Systems Framework for Development Policy (UNU, 1983, 87 pages) |
 | | Transport - Initial Environmental Assessment Series No. 8 (NORAD, 1994) |