000 00245nam a2200097Ia 4500
008 160710s1957 xx 000 0 und d
100 _aELECTRONICS WORLD
245 _aELECTRICAL WORLD, FEB.,NO.6-8
260 _bMC GRW-HILL
_c1957
942 _2ddc
_cB
999 _c40687
_d40687