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Environmental degradationUnited Nations Conference on Environment and Development (1992 : Rio de Janeiro, Brazil)Environmental policyBUSINESS & ECONOMICSInfrastructureSOCIAL SCIENCEGeneralUnited Nations Conference on Environment and Development. fast (OCoLC)fst01407904United Nations Conference on Environment and Development (1992 : Rio de Janeiro, Brazil) (uri) http://id.loc.gov/authorities/names/n91110180 (uri) http://viaf.org/viaf/sourceID/LC|n91110180