000 00316nam a2200133Ia 4500
008 210901s1964 xx 000 0 eng d
082 _a621.384 HEL
100 _aHellman, Charles.I.
245 0 _aElements of Radio
250 _a3rd
260 _aNew York
_bD.Van Norstrand
_c1964
300 _a354
942 _2ddc
_cBK
999 _c1742
_d1742