000 00248nam a2200097Ia 4500
008 130318s9999 xx 000 0 und d
100 _aIGNOU
245 _aElectric and magnetic phenomena
260 _bIGNOU
_aNew Delhi
_c2007
650 _aELECTROMAGNETISM
999 _c1410
_d1410