000 00300nam a2200121Ia 4500
008 170101s1959 xx 000 0 und d
082 _a621.313 2 L22P
100 _aLANGSDORF, A.S
245 0 _aPrinciples of direct-current machines
260 _bN.Y
_c1959
300 _axvii, 363p
942 _2ddc
_cB
999 _c13528
_d13528