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