000 00257nam a2200121Ia 4500
100 _aRanson H B
245 _aDirect Current Machines
250 _a2
260 _c1960
_aLondon
_bCleaver Hume Press Ltd
300 _a320
700 _aWebb E T A
942 _cBK
999 _c2628
_d2628