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United Nations Educational, Scientific and Cultural Organization ,  Food and Agriculture Organization of the United Nations ,  [Biological Diversity and the Urban Environment - Ecosystem Conservation Group Issue Paper] ,  Biological Diversity and the Urban Environment - Ecosystem Conservation Group Issue Paper

World Wide Fund For Nature ,  [Living European Rivers (LER) Initiative] ,  Living European Rivers (LER) Initiative

United Nations Environment Programme ,  [UNEP in the Regions: Europe - Environment for Development] ,  UNEP in the Regions: Europe - Environment for Development

United Nations Environment Programme ,  Convention on the Conservation of Migratory Species of Wild Animals (CMS) ,  [Convention sur la conservation des espèces migratrices appartenant a la faune sauvage (CMS): Compte rendu de la quatrième session de la Conference des Parties, Convención sobre la conservación de las especies migratorias de animales silvestres (CMS): Actas de la cuarta reunion de la Conferencia de las Partes] ,  [Convention on the Conservation of Migratory Species of Wild Animals (CMS): Proceedings of the Fourth Meeting of the Conference of the Parties] ,  Convention on the Conservation of Migratory Species of Wild Animals (CMS): Proceedings of the Fourth Meeting of the Conference of the Parties