000 00317nam a2200133Ia 4500
005 20260413100338.0
008 230516s9999||||xx |||||||||||||| ||und||
100 _aBlack ,Uyless
245 0 _aOptical Networks
260 _bDelhi, Pearson Edu.
_c2002
300 _a331
942 _cBB
999 _c262
_d262