Information technology and new growth opportunities / Organisation for economic co-operation and developement
Satellites and fibre optics : Competition and complementary / Organisation for economic co-operation and developement
New Systems and services in Telecommunications, II : proceedings of the second international conference on New Systems and Services in Telecommunications Liège, Belgium, November 16-18, 1983
New Systems and Services in Telecommunications, III : proceedings of the third international conference on New Systems and Services in Telecommunications Liège, Belgium, November 12-14, 1986