00286nam a2200109Ia 4500008004100000041000800041082002600049100001700075245003400092260004200126300000800168211209s1989    xx            000 0 und d  aeng  a621.38456 N89 PAR/GAR  aPARSONS, J D  aMOBILE COMMUNICATION SYSTEMS   aNEW YORKbBLACKIE HALSTED PRESSc1989  a292