000 00292nam a2200121Ia 4500
008 130409s9999 xx 000 0 und d
100 _aS.K GUPTA
245 _aWAVES AND OPTICS
260 _bR. Chand & Co.
_aN Delhi
_c2003
300 _a516
650 _aPhysics
_bB.SC.
942 _2ddc
_cBK
_039
999 _c10499
_d10499