000 00288nam a2200121Ia 4500
005 20260413100437.0
008 230516s9999||||xx |||||||||||||| ||und||
100 _aGowri, R.
245 0 _aElectro Magnetic Fields Waves
260 _bDelhi ,S.K. Katria & Sons
300 _a517
942 _cDB
999 _c1135
_d1135