000 00271nam a2200097Ia 4500
008 230401s9999 xx 000 0 eng d
100 _aI RAVI KUMAR , N BALA SARASWATI,
245 0 _aPRINCIPLES OF OPTICAL COMMUNICATION AND OPTO ELECT
260 _bLAXMI
942 _2ddc
_cBTECH
999 _c5426
_d5426