000 00254nam a2200097Ia 4500
008 160710s1956 xx 000 0 und d
100 _aELECTRONICS WORLD
245 _aELECTRICAL WORLD ,JUNE JULY NO. 23,25
260 _bMC GRAW HILL
_c1956
942 _2ddc
_cB
999 _c40679
_d40679