| 000 | 00342nam a2200145Ia 4500 | ||
|---|---|---|---|
| 005 | 20260205040757.0 | ||
| 008 | 260111s9999||||xx |||||||||||||| ||und|| | ||
| 082 | _a621.3841 R211S | ||
| 100 | _aRAY CATHODE | ||
| 245 | 0 | _aSECOND THOUGHTS ON RADIO THEORY | |
| 260 |
_aLOND. _bILIFFE _c1955 |
||
| 300 | _a409 | ||
| 690 | _aRADIO | ||
| 942 | _cBK | ||
| 999 |
_c11913 _d11913 |
||