1. | Troisième session spéciale sur la politique en matière de télécommunications [texto policopiado] / org. Organisation de Coopération et de Développement ÉconomiquesData Publicação: 1990 Tema: Vária | ||
2. | Performance indicators for public telecommunications operators / Organisation for Economic co-Operation and DevelopmentData Publicação: 1990 Tema: Comunicações Eletrónicas | ||
3. | Consequences of the technology economy programme for the development of indicators / org. Organisation for Economic co-Operation and DevelopmentData Publicação: 1990 Tema: Economia |