000 00378nam a2200169Ia 4500
003 0STCL
008 150530s9999 xx 000 0 und d
040 _aSTCL
_cSTCL
100 _aAldous, W.H.; Appleton, E.
245 _aThermionic vacuum tubes
250 _aSixth
260 _c1961
546 _aEnglish
942 _2ddc
_cBK
999 _c30637
_d30637
005 20220125170210.0