000 00486 a2200265 4500
001 110935
020 _a0
041 _aeng
080 _a621.396 Hen
245 _aPrinciples of radio
250 _a6th ed
260 _aNew York
260 _bJohn Wiley,
260 _c1952
300 _avii,655 p.
300 _c21 cm
490 _a
100 _aHenney, Keith
700 _aRichardson, Glen A.
700 _a
650 _a
650 _a
942 _cBK
942 _2UDC
999 _c128610
_d128610