1. Piazze telematiche network Publication: Roma : Piazze telematiche network, [1996] Subject(s): TelecommunicationsSocial ChangeEnvironment
2. Earth summit Author(s): United Nations Conference on Environment and Development (1992 : Rio de Janeiro, Brazil) Publication: [New York] : United Nations Dept. of Public Information, 1992 Subject(s): EnvironmentSocial Change