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International Union for Conservation of Nature and Natural Resources ,  [Liste des Nations Unies des parcs nationaux et des aires protégées 1993, Lista de las Naciones Unidas de Parques Nacionales y Areas Protegidas 1993] ,  [1993 United Nations List of National Parks and Protected Areas] ,  1993 United Nations List of National Parks and Protected Areas

United Nations Environment Programme ,  [A Report on the Conservation Monitoring Centre : Data Holdings and Data Management] ,  A Report on the Conservation Monitoring Centre : Data Holdings and Data Management

World Resources Institute ,  International Union for Conservation of Nature ,  United Nations Environment Programme ,  [Global Biodiversity Strategy: Guidelines for Action to Save, Study and Use Earth's Biotic Wealth Sustainably and Equitably] ,  Global Biodiversity Strategy: Guidelines for Action to Save, Study and Use Earth's Biotic Wealth Sustainably and Equitably

World Resources Institute ,  International Union for Conservation of Nature ,  United Nations Environment Programme ,  [Global Biodiversity Strategy: A Policy-makers' Guide] ,  Global Biodiversity Strategy: A Policy-makers' Guide