000 00226nam a2200085Ia 4500
008 160710s1952 xx 000 0 und d
245 _aELECTRONICS VOL. 25 JAN-MARCH 1952
260 _aNEW YORK
_bMCGRAW HILL
_c1952
942 _2ddc
_cB
999 _c31097
_d31097