000 00262nam a2200109Ia 4500
008 160710s1958 xx 000 0 und d
100 _aSEELY,SAMUEL
245 _aELECTRON TUBE CIRCUIT
260 _aNEW YORK
_bMCGRAW HILL
_c1958
300 _a695
942 _2ddc
_cB
999 _c27637
_d27637