000 00261nam a22001337a 4500
003 SGT
020 _a9789339220907
082 _bGHA
100 _aGHATAK AJOY
245 _aOPTICS
250 _a6TH
260 _bTATA MC GRAW HILL
_c2018
942 _2ddc
_cBK
_04
999 _c16428
_d16428