THERAJA,AK THERAJA,BL A Text Book Of Electrical Technology In S.I.Units.Vol.2.AC And DC Machines - 22nd Ed. Reprint - S Chand & Company ( Pvt.) Limited , 1999 - 734 To 1328p ISBN: 81-219-1142-7 Dewey Class. No.: 621.3 / THE/A