00270nam a2200109Ia 4500008004100000041000800041082001200049100001600061245004200077260003300119300000800152211209s1991    xx            000 0 und d  aeng  aBEN/BEN  aBENSON, F A  aFIELDS, WAVES AND TRANSMISSION LINES   aLONDONbCHAPMAN & HALLc1991  a354