000			003880000a22001450004500
245			_aThe performance and design of direct current machines
100			_aClayton, Albert E.
250			_a3rd ed.
260			_aLondon _bSir Isaac Pitman _c1959
300			_axx, 514p. : ill., photos
500			_aList of symbols included.
080			_a621.313.2 _bC6
041			_aEN
942			_cBK
999			_c52653 _d52653