000 00300nam a2200121Ia 4500
008 220201s1949 xx 000 0 eng d
082 _a621.3132
_bGRE
100 _aGreenwood, L
245 0 _aDesign of direct current machine
260 _bLondon: Mcdonald & Co
_c1949
300 _a222
942 _2ddc
999 _c71103
_d71103