000 00290nam a2200109Ia 4500
008 230411s9999 xx 000 0 und d
082 _a621.38215
_bGUP
100 _aGupta (S.C)
245 0 _aTEXT BOOK ON OPTICAL FIBER COMMUNICATION AND ITS
260 _bPHI New Delhi
_aNew Delhi
942 _cBK
999 _c3256
_d3256