000 00284nam a2200085 4500
080 _a621.316.9
_bELE.4,10
245 _aPower System Protection. Vol. 4: Digital Protection and Signalling.
100 _aElectricity Training Assoiation, Ed.
260 _aNew Delhi
_bShankar's Book Agency Pvt. Ltd.
_c2010
300 _a124
999 _c39660
_d39660