00302nam a2200109Ia 450000500170000000800410001708200240005810000420008224500290012426000310015330000080018420260205094938.0260111s9999||||xx |||||||||||||| ||und||  a621.380422  P 888 S  aPratt , Timothy and Bostian Charles W 0aSatellite Communications  aNew YorkbJohn Wileyc2000  a472