00289nam a2200109Ia 4500008004100000041001200041100002000053245007400073260000600147650000600153700002000159221030s9999    xx            000 0 und d  aEnglish  aGeorge  Kennedy 0aElectronic Communication Systemscby George  Kennedy, Davis,  Bernard  c0  aB  aDavis,  Bernard