000 002800000a22001210004500
245 _aRadio designer's handbook
100 _aLangford-Smith, F., ed.
250 _a4th ed.
260 _aLondon
_bIliffe & Sons
_c1953
080 _a621.396(03)
_bL3
041 _aEN
942 _cBK
999 _c111485
_d111485