00278nam a2200121Ia 4500008004100000041000800041082002500049100001300074245002300087250001000110260002800120300000800148211209s1978    xx            000 0 und d  aeng  a621.3841 N78 MAR/MAR  aMARCUS A  aELEMENTS OF RADIO   a6 ed.  bKHANNA PUBLISHERSc1978  a704