000 00264nam a2200109Ia 4500
100 _aCLAYTON, A.E.
110 _aHANCOCK, N.N.
245 _aPERFORMANCE AND DESIGN OF DIRECT CURRENT MACHINES
260 _bSIR ISAAC PITMAN
_c1971
300 _a516
942 _2ddc
_cBB
999 _c72196
_d72196