000 00264nam a2200109Ia 4500
005 20241019020003.0
008 220201s9999 xx 000 0 eng d
100 _aSubrahmanyam, N
245 0 _aText book of optics
260 _aNew Delhi
_bS.Chand
942 _2ddc
_011
999 _c70288
_d70288