000 00349nam a2200157Ia 4500
003 0STCL
008 150530s9999 xx 000 0 und d
040 _aSTCL
_cSTCL
100 _aSpangenberg, K.R.
245 _aVacuum tubes
260 _bMcgraw hill
_c1984
546 _aEnglish
942 _2ddc
_cBK
999 _c30374
_d30374
005 20220125170206.0