000 00438nam a2200181Ia 4500
008 250929b |||||||| |||| 00| 0 eng d
020 _a9788131249154
041 _aE
100 _aKhurana, A K
245 _aTheory and practice of optics and refraction 4th ed.
260 _aElsevier
_bHaryana
_c2019
300 _axi,526
526 _aUG
654 _aOphthalmic
700 _aOphthalmic
942 _cBK
999 _c58118
_d58118