000 00377nam a2200169Ia 4500
008 180424s9999 xx 000 0 und d
084 _a535 G4
100 _a"Ghatak, Ajoy"
245 0 _aOptics
250 _a\\197700ENGGPCX
260 _aT M H
260 _b1977
260 _cNew Delhi
300 _axx+538 p
500 _aincludes index and biblioraphy
942 _cBK
999 _c34556
_d34556