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Intergovernmental Council of the International Programme for the Development of Communication : second session, Acapulco, 18-25 January 1982 : final report / International Programme for the Development of Communication. Intergovernmental Council; Unesco.. Paris : Unesco, 1982.

The effect of changing technology on the structure of costs for the provision of public long distance telephone service = L'incidence de l'évolution de la technologie sur la structure du prix de revient de la prestation du service téléphonique public interurbain / The Coopers & Lybrand Consulting Group; Federal-Provincial-Territorial Task Force on Telecommunications (Canada); Groupe de travail fédéral-provincial-territorial sur les télécommunications (Canada); Sherman, L. R. (Bud). [Ottawa] : The Task Force = Le Groupe de travail, c1988.