The global commercial geostationary satellite communications market / Linda Lee Bower
Microstrip antennas : the analysis and design of microstrip antennas and arrays / ed. by David Pozar, Daniel H. Schaubert
Numbering for telephony services into the 21st century : a report to OFTEL / by Ovum Ltd
Anuário 1995 / Ministério das Obras Públicas, Transportes e Comunicações