000 00407nam a2200169Ia 4500
008 210210b1989 xxu||||| |||| 00| 0 eng d
020 _a81 219 0112 X
082 _a535 SUBT
100 _aSUBRAHMANYAM (N) & BRIJ LAL.
245 _aText book of optics. Ed 19.
250 _a
260 _aN D
_bS. Chand & Co. Ltd.
_c1989
300 _axv,612
650 _aOptics
690 _aOptics
906 _a043320
999 _c92893
_d92893