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082 _a617.7
_bKHU
100 _aA K Khurana
245 0 _aTheory & Practice Optics And Refration
250 _a3rd
260 _bElservier
_c2014
300 _a439
490 _vC.2
650 _a Ophthalmology
942 _cBK
999 _c2641
_d2641