000 00294nam a2200109Ia 4500
008 140917b1964 xxu||||| |||| 00| 0 eng d
082 _a621.3841, HEL
100 _aCharles I Hellman
245 _aElements of Radio.
260 _aNew Delhi :
_bW.D.Brock,
_c1964
700 _aHellman, Charles I
999 _c187508
_d187508