000 00327nam a2200121Ia 4500
008 211215s9999 xx 000 0 und d
040 _cJayakar Knowledge Resource Centre
245 0 _aRac transmitting tubes
260 _bRADIO CORPORATION OF AMERICA
_aNEW JERSEY
_c1956
300 _a254p p.
653 _aENGERING
942 _c1
999 _c45964
_d45964