000 00287pam a2200121a 44500
008 230405s1983 xxu||||| |||| 00| 0 eng d
041 _aENG
100 _aGhatak Ajoy
245 _aOptics
260 _anew delhi
_bTata McGraw Hill Publishing Co.
_c1983
300 _a538
906 _a1076
999 _c292419
_d292419