000 00253nam a2200121Ia 4500
100 _aSubrahmanyam N
245 2 _aTextbook of Optics
250 _a7th
260 _c1976
_bS.Chand & Co.
_aNew Delhi
300 _axv+531
700 _aBrij Lal
942 _cBK
999 _c6137
_d6137