Title: A world divided
Subjects: Environmental protection, Congresses, History, International cooperation, United Nations Conference on the Human Environment (1972 : Stockholm, Sweden), United Nations Conference on Environment and Development (1992 : Rio de Janeiro, Brazil), United Nations Conference on the Human Environment (1972 : Stockholm, Sweden) (uri) http://id.loc.gov/authorities/names/n80036750 (uri) http://viaf.org/viaf/sourceID/LC|n80036750, United 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