000 00227nam a2200085Ia 4500
008 160710s1953 xx 000 0 und d
245 _aELECTRONICS VOL. 26 APRIL-JUNE 1953
260 _aNEW YORK
_bMCGRAW HILL
_c1953
942 _2ddc
_cB
999 _c31102
_d31102