000 00304nam a2200121Ia 4500
008 160710s1978 xx 000 0 und d
082 _a621.38132 HEL
100 _aHELSZAJN,J.
245 _aPASSIVE AND ACTIVE MIC ROWAVE CIRCUITS
260 _bJOHN WILEY & SONS
_c1978
300 _a274
942 _2ddc
_cB
999 _c42348
_d42348