000 00379nam a2200169Ia 4500
008 210210b1951 xxu||||| |||| 00| 0 eng d
041 _aeng
082 _a535/93
100 _aNELKON (M)
245 _aPhysics and radio
260 _aLondon
_bEdward Arnold & Co
_c1951
300 _a388
650 _aradio
650 _aPhysics
690 _aElectricity
906 _a008711
999 _c126646
_d126646