000 002620000a22001210004500
245 _aOptics
100 _aGhatak, Ajoy
260 _aNew Delhi
_bTata McGraw-Hill
_c1977
300 _axvii, 538p. : ill.
080 _a535
_bG5
041 _aEN
942 _cBK
999 _c111878
_d111878