00265nam a2200109Ia 4500008004100000041000800041082002500049100001100074245005300085260000900138300000800147211209s1950    xx            000 0 und d  aeng  a621.3824 N50 JOH/KRA  aJOHN D  aANTENNAS: ELECTRICAL AND ELECTRONIC ENGINEERING   c1950  a553