000 00297nam a2200121Ia 4500
008 211209s1978 xx 000 0 und d
041 _aeng
082 _a621.381 31 N78 CON
100 _aCONNOR F R
245 _aWAVE TRANSMISSION ( SI UNITS)
260 _bEDWARD ARNOLD
_c1978
300 _a6 + 107
999 _c16188
_d16188