621.31042 GUP 122906
Gupta, J. B. Theory and performance of electrical machines : D. C. machines, A. C. machines and polyphase circuits in S. I. units / by J. B. Gupta. - Delhi : S. K. Kataria & sons , 2009 xvi, 759p. :ill; : 23cm 9788185749150 * Electrical machines
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