000 00309nam a2200121Ia 4500
008 220217s9999||||xx |||||||||||||| ||und||
082 _a621.3 GUP
100 _aGuptha S S
245 0 _aElectrical engineering
260 _aLaxmi publications
_bNew Delhi
300 _b215
650 _aELECTRICAL SCIENCE
999 _c175474
_d175474