000 00286nam a22001217a 4500
020 _a9788121926119
082 _a535
_bSUB/T
100 _aSubrahmanyam,N
245 _aA TEXT BOOK OF OPTICS
260 _aNew Dehi
_bS Chand and company limited
_c1966
300 _bill.;699p
942 _cBK
999 _c20076
_d20076