000 00373nam a2200157Ia 4500
008 210210b1991 xxu||||| |||| 00| 0 eng d
082 _a535 KHAF
100 _aKHANNA (D R) & GULATI (H R).
245 _aFundamentals of optics. Ed 15.
250 _a
260 _aN D
_bR Chand Co.,
_c1991
300 _axv,675
650 _aOptics
690 _aOptics
906 _a048276
999 _c97497
_d97497