000 00250nam a2200109Ia 4500
020 _a8174092323
082 _a621.317
100 _aRAO, SUNIL .S
245 _aSWITCHGEAR PROTECTION AND POWER SYSTEMS
260 _aNEW DELHI
_b KHANNA
_c1973
942 _cBK
999 _c5984
_d5984