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United Nations Environment Programme ,  [Keeping Track of Our Changing Environment: From Rio to Rio+20 (1992-2012)] ,  Keeping Track of Our Changing Environment: From Rio to Rio+20 (1992-2012)

United Nations Environment Programme ,  [How the hotel and tourism industry can protect the ozone layer] ,  How the hotel and tourism industry can protect the ozone layer

United Nations Environment Programme ,  [Sustainable tourism: the tour operator's contribution] ,  Sustainable tourism: the tour operator's contribution

United Nations Environment Programme ,  [In the front line: shoreline protection and other ecosystem services from mangroves and coral reefs] ,  In the front line: shoreline protection and other ecosystem services from mangroves and coral reefs

United Nations Environment Programme ,  World Trade Organization (WTO) ,  [Vers un tourisme durable: Guide à l'usage des décideurs] ,  [Making Tourism more Sustainable: A Guide for Policy Makers] ,  Making Tourism more Sustainable: A Guide for Policy Makers

United Nations Environment Programme ,  [Switched on: renewable energy opportunities in the tourism industry] ,  Switched on: renewable energy opportunities in the tourism industry

United Nations Environment Programme ,  [Sustainable consumption and production for poverty alleviation] ,  Sustainable consumption and production for poverty alleviation

United Nations Environment Programme ,  [The business case for the green economy: sustainable return on investment] ,  The business case for the green economy: sustainable return on investment

United Nations Environment Programme ,  International Council for Local Environmental Initiatives (ICLEI) ,  [Tourism and local agenda 21: the role of local authorities in sustainable tourism] ,  Tourism and local agenda 21: the role of local authorities in sustainable tourism

United Nations Environment Programme ,  UNDESA ,  Food and Agriculture Organization of the United Nations ,  [Green economy: an analysis of challenges and opportunities] ,  Green economy: an analysis of challenges and opportunities