621.31042 GUP 24297
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. - 9th ed. - Ludhiana : B. D. Kataria & sons , 1990 iv, 416p. :ill ;25cm * Electrical machines
Powered by Koha