000 00257nam a22001337a 4500
020 _a9789339220907
082 _a535
100 _aGHATAK AJAY
245 _aOPTICS
250 _a6TH
260 _aCHENNAI
_bMGH
_c2017
300 _aXXVII;31.19P
942 _cBK
999 _c8574
_d8574