000 00315nam a2200145Ia 4500
999 _c58761
_d58761
020 _a9788131249154
082 _a617.5
100 _aKhurana(AK)
245 0 _aTheory and Practice of Optics and Refraction
250 _a4
260 _bElsevier
_c2018
300 _eNO
650 _aOphthalmology
942 _cBKS