000 00411nam a2200181Ia 4500
008 210210b1950 xxu||||| |||| 00| 0 eng d
041 _aeng
082 _a534/98
100 _aSETHI (N K)
245 _aTextbook of optics
260 _aDelhi
_bPremier Publishing Co.
_c1950
300 _a457
650 _aTextbook
650 _aoptics
690 _aOptics
700 _aRAIZADA (S B)
906 _a008586
999 _c126506
_d126506