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020 _a--
040 _cDUET_Lib
082 _221
_a621.3132/ LAP
100 _aLangsdorf, Alexander S.
_95253
245 _aPrinciples of direct-current machines/
_cAlexander S. Langsdorf.
250 _a6th ed.
260 _aNew York:
_bMcGraw Hill,
_c1595
300 _axvii,363p.:
_bills.;
_g21cm.
500 _aIncludes indexd.
650 _a1 . Direct current machines.
_95251
650 _a2 . E E E
_93107
942 _2ddc
_cBK
999 _c3140
_d3140