000 00325nam a2200121Ia 4500
008 190829s9999 xx 000 0 und d
082 _a621.384
_bHEL/EL
100 _aHELLMAN, Charles I.
245 0 _aELEMENTS OF RADIO
250 _a2nd Ed.
260 _bD.Van Nostrand Company Limited, New York
_aNew York
_c1965
942 _cBK
999 _c9407
_d9407