000 00393nam a2200145Ia 4500
008 211214s9999 xx 000 0 und d
040 _cJayakar Knowledge Resource Centre
100 _aReich, Herbert J
245 0 _aPrinciples of electron tubes
250 _a1
260 _bMcgrae-Hill Book Company, Inc5729
_aNew York
_c1941
300 _aXV,395P p.
653 _aENGINEERING
942 _c1
999 _c11786
_d11786