Title: Demokratichno obshtestvo, opazvashto okolnata sreda chrez energiĭna efektivnost (Dukhŭt na RIO'92)
Subjects: United Nations Conference on Environment and Development (1992 : Rio de Janeiro, Brazil), Energy consumption, Congresses, Environmental aspects, United Nations Conference on Environment and Development (1992 : Rio de Janeiro, Brazil) http://id.loc.gov/authorities/names/n91110180
Places: Europe, Bulgaria