000 00224nam a2200085Ia 4500
008 160710s1950 xx 000 0 und d
245 _aELECTRONICS VOL. 23 NOV-DEC 1950
260 _aNEW YORK
_bMCGRAW HILL
_c1950
942 _2ddc
_cB
999 _c31092
_d31092