000 | 00290pam a2200109a 44500 | ||
---|---|---|---|
082 |
_a621.384136 _bE;25 |
||
100 | _aHeyboer, J. P. | ||
245 | 1 |
_aTRANSMITTING VALUES _cTHE USE OF PENTODES, TETRODES AND TRIDEG IN TRANSMITER CIRCUITS |
|
260 |
_a _b _c |
||
964 | _gCIRC | ||
997 | _a9660 s C | ||
999 |
_c435733 _d435733 |