000 00282nam a2200121Ia 4500
008 220201s1923 xx 000 0 eng d
100 _aHawkins, CC
245 0 _aDynamo, continous current dynamos
250 _a6
260 _bNewYork: Pitman
_c1923
300 _a322
942 _2ddc
999 _c70593
_d70593