000 00341nam a2200133Ia 4500
008 220919s9999 xx 000 0 und d
082 _a621.317
_bGUP
100 _aGUPTA, J.B.
245 0 _aSWITCHGEAR AND PROTECTION
260 _bSK KATARIA & SONS, NEW DELHI
_c2011-12
300 _a691
650 _aElectrical Engineering
942 _cBK
999 _c150206
_d150206