00798nam0 2200241 450 00002431320090312113003.020090312d1990----km-y0itay50------baengUSa-------001yy<<The >>Communications satelliteMark Williamsonforeword by Roy GibsonNew YorkAdam Hilgerc1990420 p.ill.25 cm<<The >>Communications satellite45412Satelliti artificiali621.3821Ingegneria elettrotecnica, delle comunicazioniWilliamson,Thomas Mark633242ITUNIPARTHENOPE20090312RICAUNIMARC000024313S 621.38/6S C 471DSA2009Communications satellite45412UNIPARTHENOPE