000 00273nam a2200109Ia 4500
008 241124s9999 xx 000 0 und d
100 _aGupta, S.C.;Kapoor
245 0 _aOptolelectronic Devices and System
260 _bPHI Learning Pvt. Ltd.
260 _c2015
942 _cBK
999 _c16202
_d16202