Gupta,J.B A Course in Electrical Power: Transmission, Distribution, Generation, Protection, Switchgear, Voltage Control, Utilization of Electric Power and Electric Traction - 10th ed. - 1998 Ssmb 0 - p.:ill.;24cm ISBN: 8185749035 / 9788185749037 Dewey Class. No.: 621.319 GUP 1998