000 00279nam a2200109Ia 4500
008 160710s1959 xx 000 0 und d
100 _aLANGSDORF,A.S.
245 _aPRICIPLES OF DIRECT CURRENT MACHINES
260 _aNEW YORK
_bMCGRAW HILL
_c1959
300 _a363
942 _2ddc
_cB
999 _c27638
_d27638